Railways NTPC (Technical Ability) Metal Forming, Casting and Cutting Question Bank

done Metal Forming Total Questions - 110

• question_answer1)
  Magnetic forming is an example of:
  A)
  Cold forming done clear
  B)
  Hot forming done clear
  C)
  High energy rate forming done clear
  D)
  Roll forming. done clear
  View Solution play_arrow

• question_answer2)
  Match List-I (Type of Forging) with List-II (Operation) and select the correct answer using the code given below the Lists:

  List-I (Type of Forging)		List-II (Operation)
  A.	Drop Forging	1.	Metal is gripped in the dies and pressure is applied on the heated end
  B.	Press Forging	2.	Squeezing action
  C.	Upset forging	3.	Metal is placed between rollers and pushed
  D.	Roll Forging	4.	Repeated hammer

  Codes:
  A)
  A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done clear
  B)
  A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 done clear
  C)
  A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 done clear
  D)
  A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4 done clear
  View Solution play_arrow

• question_answer3)
  What are the advantages of powder metallurgy'?

  1. Extreme purity product

  2. Low labour cost.

  3. Low equipment forming

  Select the correct answer using the code given below:
  A)
  1, 2 and 3                      done clear
  B)
  1 and 2 only done clear
  C)
  2 and 3 only                  done clear
  D)
  1 and 3 only done clear
  View Solution play_arrow

• question_answer4)
  Which one of the following methods is used for the manufacture of collapsible tooth paste tubes?
  A)
  Impact extrusion done clear
  B)
  direct extrusion done clear
  C)
  Deep drawing     done clear
  D)
  piercing. done clear
  View Solution play_arrow

• question_answer5)
  Consider the following steps in forging a connecting rod from bar stock:

  1. Blocking

  2. Trimming

  3. Finishing

  4. Edging

  Select the correct sequence of these operations using the codes given below:

  Codes:
  A)
  \[1-2-3-4\]                      done clear
  B)
  \[2-3-4-1\] done clear
  C)
  \[3-4-1-2\]                      done clear
  D)
  \[4-1-3-2\] done clear
  View Solution play_arrow

• question_answer6)
  The extrusion process(es) used for the production of toothpaste tube is/are

  1. Tube extrusion

  2. Forward extrusion

  3. Impact extrusion

  Select the correct answer using the codes given below:

  Codes:
  A)
  1 only               done clear
  B)
  1 and 2 done clear
  C)
  2 and 3             done clear
  D)
  3 only done clear
  View Solution play_arrow

• question_answer7)
  Cold working produces the following effects:

  1. Stresses are set up in metal

  2. Grain structure gets distorted

  3. Strength and hardness of the metal are decreased

  4. Surface finish is reduced

  Which of these statements are correct?
  A)
  1 and 2             done clear
  B)
  1, 2 and 3 done clear
  C)
  3 and 4             done clear
  D)
  1 and 4. done clear
  View Solution play_arrow

• question_answer8)
  Consider the following statements:

  In comparison to hot working, in cold working

  1. Higher forces are required.

  2. No heating is required.

  3. Less ductility is required.

  4. Better surface finish is obtained.

  Which of the statements given above are correct?
  A)
  1, 2 and 3                      done clear
  B)
  2 and 4 done clear
  C)
  1 and 3             done clear
  D)
  2, 3 and 4 done clear
  View Solution play_arrow

• question_answer9)
  A cylindrical vessel with flat bottom can be deep drawn by:
  A)
  Shallow drawing done clear
  B)
  Single action deep drawing done clear
  C)
  Double action deep drawing done clear
  D)
  Triple action deep drawing. done clear
  View Solution play_arrow

• question_answer10)
  Consider the following statements:

  1. Metal forming decreases harmful effects of impurities and improves mechanical strength.

  2. Metal working process is a plastic deformation process.

  3. Very intricate shapes can be produced by forging process as compared to casting process.

  Which of the statements given above are correct
  A)
  1, 2 and 3                      done clear
  B)
  1 and 2 only done clear
  C)
  2 and 3 only                  done clear
  D)
  1 and 3 only done clear
  View Solution play_arrow

• question_answer11)
  Match List-I (Operations) with List-II (Stresses induced) and select the correct answer using the codes given below the Lists:

  List-I		List-II
  A.	Blanking	1.	Tension
  B.	Stretch forming	2.	Compression
  C.	Coining	3.	Shearing
  D.	Deep drawing	4.	Tension and

  Codes:
  A)
  A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 done clear
  B)
  A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1 done clear
  C)
  A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 done clear
  D)
  A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4 done clear
  View Solution play_arrow

• question_answer12)
  Match List-I (Forging operations) with List-II (Descriptions) and select the correct answer using the codes given below the Lists:

  List-I		List-II
  A.	Flattening	1.	Thickness is reduced continuously at different sections along at length
  B.	Drawing	2.	Metal is displaced away from centre, reducing thickness in middle and increasing length
  C.	Fullering	3.	Rod is pulled through a die
  D.	Wire drawing	4.	Pressing a workpiece between two flat dies

  Codes:
  A)
  A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]4 done clear
  B)
  A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]3 done clear
  C)
  A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]4 done clear
  D)
  A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]3 done clear
  View Solution play_arrow

• question_answer13)
  Match List-I (Operation) with List-II (Explanation) and select the correct answer using the codes given below the Lists:

  List-I (Operation)		List-II (Explanation)
  A.	Beading	1.	The edge of the sheet metal is bent into the cavity of a die
  B.	Flanging	2.	The process of punching a hole first and then expanding into a flange
  C.	Hemming	3.	The edge of the sheet metal is folded over itself
  D.	Roll Forming	4.	Bending continuous lengths of sheet metal
  		5.	The process of bending the edges of sheet metals

  Codes:
  A)
  A\[\to \]1, B\[\to \]5, C\[\to \]3, D\[\to \]4 done clear
  B)
  A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 done clear
  C)
  A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done clear
  D)
  A\[\to \]4, B\[\to \]5, C\[\to \]1, D\[\to \]3 done clear
  View Solution play_arrow

• question_answer14)
  In deciding the clearance between punch and die in press work in shearing, the following rule is helpful:
  A)
  Punch size controls hole size, die size controls blank size done clear
  B)
  Punch size controls both hole size and blank size done clear
  C)
  die size controls both size and blank size done clear
  D)
  Die size, controls hole size, punch size controls blank. done clear
  View Solution play_arrow

• question_answer15)
  The 'spring back' effect in press working is:
  A)
  Elastic recovery of the sheet metal after removal of the load done clear
  B)
  Regaining the original shape of the sheet metal done clear
  C)
  Release of stored energy in the sheet metal done clear
  D)
  Partial recovery of the sheet metal done clear
  View Solution play_arrow

• question_answer16)
  Which of the following are included in the finishing operations for porous bearing?

  1. Infiltration

  2. Sizing

  3. Heat treatment

  4. Coining

  Select the correct answer using the code given below:
  A)
  1 and 2             done clear
  B)
  2 and 3 done clear
  C)
  2 and 4             done clear
  D)
  1 and 4 done clear
  View Solution play_arrow

• question_answer17)
  Which one of the following temperatures is exactly suited to carry out hot working processes?
  A)
  Room temperature done clear
  B)
  Temperature of recovery stage done clear
  C)
  Temperature above recrystallization stage done clear
  D)
  Temperature of grain growth stage done clear
  View Solution play_arrow

• question_answer18)
  Match List-I (Press-part) with List-II (Function) select the correct answer using the codes given below

  List-I (Press-part)		List-I (Function)
  A.	Punch plate	1.	Assisting withdrawal of the punch
  B.	Stripper	2.	Advancing the work-piece through correct distance
  C.	Stopper	3.	Ejection of the work-piece from die cavity
  D.	Knock out	4.	Holding the small punch in the proper position

  Codes:
  A)
  A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done clear
  B)
  A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 done clear
  C)
  A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done clear
  D)
  A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done clear
  View Solution play_arrow

• question_answer19)
  The process of removing the burrs of flash from a forged component in drop forging is called:
  A)
  Swaging             done clear
  B)
  perforating    done clear
  C)
  Trimming                       done clear
  D)
  fettling.       done clear
  View Solution play_arrow

• question_answer20)
  Which of the following are the characteristics of extrusion process

  1. Faster speed of production

  2. Good surface finish

  3. Dimensions can be maintained with close tolerances

  4. Mechanical properties of the extruded products are inferior to that of the roiled products

  Select the correct answer using the codes given below:
  A)
  1 and 2             done clear
  B)
  1, 2 and 3 done clear
  C)
  3 and 4             done clear
  D)
  1 and 4.   done clear
  View Solution play_arrow

• question_answer21)
  Which of the following are produced by powder metallurgy process

  1. Cemented carbide dies

  2. Porous bearings

  3. Small magnets

  4.  Parts with intricate shapes

  Select the correct answer using the codes given below:

  Codes:
  A)
  1, 2 and 3                      done clear
  B)
  1, 2 and 4 done clear
  C)
  2, 3 and 4                      done clear
  D)
  1, 3 and 4 done clear
  View Solution play_arrow

• question_answer22)
  In part produced by powder metallurgy process, presintering is done to:
  A)
  Increase the toughness of the component done clear
  B)
  Increase the density of the component done clear
  C)
  Facilitate bonding of non-metallic particles done clear
  D)
  Facilitate machining of the part. done clear
  View Solution play_arrow

• question_answer23)
  Which metal forming process is used for manufacture of long steel wire?
  A)
  Deep drawing     done clear
  B)
  forging done clear
  C)
  Drawing             done clear
  D)
  extrusion. done clear
  View Solution play_arrow

• question_answer24)
  Which one of the following is the correct statement?
  A)
  Extrusion is used for the manufacture of seamless tubes done clear
  B)
  Extrusion is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work done clear
  C)
  Extrusion is used to improve fatigue resistance of the metal by setting up compressive stresses on its surface done clear
  D)
  Extrusion comprises pressing the metal insidea chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part. done clear
  View Solution play_arrow

• question_answer25)
  For calculating the blank diameter D for thin cylindrical shell of outer diameter d and with height of the shall h, which one of the following formulae is used when d 220r, where r is the comer radius on the punch?
  A)
  \[D=\sqrt{{{d}^{2}}+4d{{h}^{2}}}\] done clear
  B)
  \[D=\sqrt{{{d}^{2}}+4dh-0.5r}\] done clear
  C)
  \[D=\sqrt{{{d}^{2}}+4dh-r}\] done clear
  D)
  \[D=\sqrt{{{d}^{2}}+4dh-1.5r}\] done clear
  View Solution play_arrow

• question_answer26)
  How are tooth-paste capsules produced?
  A)
  By boring operation done clear
  B)
  By tube hiring operation done clear
  C)
  By impact extrusion done clear
  D)
  By tube drawing. done clear
  View Solution play_arrow

• question_answer27)
  What is the force required to be exerted by the punch in order to shear out the blank (for a circular disc) of 20 mm diameter and 1.5 mm thickness and having a shear strength equal to 300 MPa?
  A)
  9.0 kN               done clear
  B)
  18.0 kN done clear
  C)
  28.3 kN             done clear
  D)
  45.0 kN done clear
  View Solution play_arrow

• question_answer28)
  In blanking operation the clearance is provided:
  A)
  On the punch done clear
  B)
  On the die done clear
  C)
  Both on the punch and the die done clear
  D)
  Neither/on the punch nor on the die. done clear
  View Solution play_arrow

• question_answer29)
  Which of the following parts can he made economically be powder metallurgy?

  1. Gears

  2. Automobile cylinders

  3. Filters

  4. Gun barrels

  Select the correct answer using the code given below:
  A)
  1 and 2             done clear
  B)
  1 and 3 done clear
  C)
  2 and 3             done clear
  D)
  2 and 4 done clear
  View Solution play_arrow

• question_answer30)
  At which temperature is cold working of metals carried out?
  A)
  At the recrystallization temperature done clear
  B)
  Below the recrystallization temperature done clear
  C)
  Above the recrystallization temperature done clear
  D)
  At any temperature done clear
  View Solution play_arrow

• question_answer31)
  What is the process of making sheet metal components to the contour of a die by making use of an explosive impact known as:
  A)
  Explosive cladding          done clear
  B)
  explosive welding done clear
  C)
  Explosive forming           done clear
  D)
  explosive joining done clear
  View Solution play_arrow

• question_answer32)
  Consider the following steps involved in conditioning Of metal powers in powder metallurgy techniques:

  1. Pulverization

  2. Blending or mixing

  3. Screening

  4. Rieat Treatment.

  Which one of the following is the correct sequence of the above steps?
  A)
  \[1-2-3-4\]                      done clear
  B)
  \[2-3-4-1\] done clear
  C)
  \[3-4-1-2\]                      done clear
  D)
  \[4-1-3-2\] done clear
  View Solution play_arrow

• question_answer33)
  The tooling cost is highest in which one of the following methods of plastic processing?
  A)
  Extrusion done clear
  B)
  Casting done clear
  C)
  Compression molding done clear
  D)
  Injection molding done clear
  View Solution play_arrow

• question_answer34)
  Which one of the following processes necessarily requires mandrel of requisite diameter to form the internal hole?
  A)
  Hydrostatic extrusion done clear
  B)
  Tube drawing done clear
  C)
  Swaging done clear
  D)
  Wire drawing done clear
  View Solution play_arrow

• question_answer35)
  Which one of the correct relationship between surface velocity of the roils\[({{V}_{r}})\], entrance velocity of work \[({{V}_{0}})\] and exit velocity of work \[({{V}_{f}})\] in rolling?
  A)
  \[{{V}_{0}}<{{V}_{r}}<{{V}_{f}}\]               done clear
  B)
  \[{{V}_{f}}<{{V}_{r}}<{{V}_{0}}\] done clear
  C)
  \[{{V}_{r}}<{{V}_{f}}<{{V}_{0}}\]               done clear
  D)
  \[{{V}_{0}}<{{V}_{f}}<{{V}_{r}}\] done clear
  View Solution play_arrow

• question_answer36)
  Which one of the following statements in extrusion processes in not correct?
  A)
  In forward extrusion, the problem of friction is prevalent because of relative motion between heated metal billet and cylinder wall done clear
  B)
  In backward extrusion, the problem of friction is completely eliminated done clear
  C)
  Forward cold extrusion is similar to forward hot extrusion forces except extrusion ratios are higher and extrusion pressures are less done clear
  D)
  Cold extrusion forging is similar to impact extrusion except that side walk are much thicker and their height is smaller. done clear
  View Solution play_arrow

• question_answer37)
  In drawing operation if \[{{D}_{i}}=\] initial diameter and \[{{D}_{0}}=\] outgoing diameter, then what is the degree of drawing equal to?
  A)
  \[\frac{{{D}_{i}}-{{D}_{0}}}{{{D}_{i}}}\]                   done clear
  B)
  \[\frac{D_{i}^{2}-D_{0}^{2}}{D_{i}^{2}}\] done clear
  C)
  \[\frac{D_{i}^{2}-D_{0}^{2}}{D_{i}^{2}}\]               done clear
  D)
  \[\sqrt{\frac{D_{i}^{2}-D_{0}^{2}}{D_{i}^{2}}}\] done clear
  View Solution play_arrow

• question_answer38)
  Consider the following statements related to forging:

  1. Flash is excess material added to stock-which flows around, parting line.

  2. Flash helps in filling of thin ribs and bosses in upper die.

  3. Amount of flash depends upon forging force.

  Which of the above statements is/are correct?
  A)
  1, 2 and 3                      done clear
  B)
  1 and 2 done clear
  C)
  1 and 3             done clear
  D)
  2 and 3 done clear
  View Solution play_arrow

• question_answer39)
  In drawing operation, proper lubrication is essential for which of the following reasons.

  1. To improve die life

  2. To reduce drawing forces

  3. To reduce temperature

  4. To improve surface finish

  Select the correct answer using the code given below:
  A)
  1 and 2 only                  done clear
  B)
  1, 3 and 4 only done clear
  C)
  3 and 4 only                  done clear
  D)
  1, 2, 3 and 4 done clear
  View Solution play_arrow

• question_answer40)
  Which of the following are the characteristics of cold working of metals?

  1. Stresses are set up in the metal that remain unless removed by subsequent heat treatment

  2. Coarse grains are refined

  3. Strength and hardness are increased.

  Select the correct answer using the code given below:
  A)
  1 and 2 only      done clear
  B)
  1 and 3 only done clear
  C)
  2 and 3 only        done clear
  D)
  3 only done clear
  View Solution play_arrow

• question_answer41)
  For punching operation the clearance is provided on which one of the following?
  A)
  The punch done clear
  B)
  The die done clear
  C)
  50% on the punch 50% on the die done clear
  D)
  \[\frac{1}{3}\,rd\] on the punch \[\frac{2}{3}\,rd\] on the die done clear
  View Solution play_arrow

• question_answer42)
  Match List-I with List-II and select the correct answer using the code given below the list:

  List-I (Type of Rolling Mill)		List-II (Characteristic)
  A.	Two high non reversing mills	1.	Middle role rotates by friction
  B.	There high mills	2.	By small working roll, power for rolling is reduced
  C.	Flour high mills	3.	Rolls of equal size are rotated only in one direction
  D.	Cluster mills	4.	Diameter of working roll is very small

  Codes:
  A)
  A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]1 done clear
  B)
  A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 done clear
  C)
  A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1 done clear
  D)
  A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]4 done clear
  View Solution play_arrow

• question_answer43)
  Consider the following statements:          

  Roll forces in rolling can be reduced by

  1. Reducing friction

  2. Using large diameter roller to increase the co

  3. Taking smaller reductions per pass to reduce the contact area.

  Which of the statements given above are correct?
  A)
  1 and 2 only      done clear
  B)
  2 and 3 only   done clear
  C)
  1 and 3 only        done clear
  D)
  1, 2 and 3 done clear
  View Solution play_arrow

• question_answer44)
      The order of radial clearance between the punch and die for shearing plate of thickness 't' \[(1\,\,mm\le 2\,\,mm)\]is:
  A)
  0.05 t                done clear
  B)
  0.15 t       done clear
  C)
  0.20 t                done clear
  D)
  0.25 t       done clear
  View Solution play_arrow

• question_answer45)
  The force required for piercing a round hole when the die and punch are not provided with any shear is given by: Where L = length of die land, D = diameter of hole, T = thickness, S = shear strength
  A)
  LST                              done clear
  B)
  \[\pi \] DS        done clear
  C)
  DLST                done clear
  D)
  \[\pi \] DST       done clear
  View Solution play_arrow

• question_answer46)
           Thread rolling is restricted to:
  A)
  Ferrous materials done clear
  B)
  Ductile materials done clear
  C)
  Hard materials    done clear
  D)
  none of the above. done clear
  View Solution play_arrow

• question_answer47)
  A moving mandrel is used in:
  A)
  Wire drawing                  done clear
  B)
  Tube drawing done clear
  C)
  Metal cutting                  done clear
  D)
  Forging. done clear
  View Solution play_arrow

• question_answer48)
  In sheet metal work, the cutting force on the tool can he reduced by:
  A)
  Grinding the cutting edges sharp done clear
  B)
  Increasing the hardness of tool done clear
  C)
  Providing shear angle on tool done clear
  D)
  Increasing the hardness of die. done clear
  View Solution play_arrow

• question_answer49)
  Tandem drawing of wires and tubes is necessary because:
  A)
  It is possible to reduce at one stage done clear
  B)
  Annealing is needed between stages done clear
  C)
  Accuracy in dimension is not possible otherwise done clear
  D)
  Surface finish improves after drawing stage. done clear
  View Solution play_arrow

• question_answer50)
  In order to get uniform thickness of the plate by rolling process, one provides:
  A)
  Camber on the rolls         done clear
  B)
  Offset on the rolls done clear
  C)
  Hardening of the rolls done clear
  D)
  Antifriction bearings done clear
  View Solution play_arrow

• question_answer51)
  The blank diameter used in thread rolling will be:
  A)
  Equal to minor diameter of the thread done clear
  B)
  Equal to pitch diameter of the thread done clear
  C)
  A little large than the minor diameter of the thread done clear
  D)
  A little large than the pitch diameter of the thread. done clear
  View Solution play_arrow

• question_answer52)
  Which one of the following manufacturing process requires the provision of 'gutters?
  A)
  Closed die forging            done clear
  B)
  Centrifugal casting done clear
  C)
  Investment casting          done clear
  D)
  Impact extrusion. done clear
  View Solution play_arrow

• question_answer53)
  Match List-I with List-II and select the correct answer using the codes given below the lists:

  List-I (Match Property)		List-II (Related to)
  A.	Malleability	1.	Wire drawing
  B.	Hardness	2.	Impact loads
  C.	Resilience	3.	Cold rolling
  D.	Isotropy	4.	Indentation
  		5.	Direction

  Codes:
  A)
  A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 done clear
  B)
  A\[\to \]3, B\[\to \]4, C\[\to \]2, D\[\to \]5 done clear
  C)
  A\[\to \]5, B\[\to \]4, C\[\to \]2, D\[\to \]3 done clear
  D)
  A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]5 done clear
  View Solution play_arrow

• question_answer54)
  Match List-I with List-II and select the correct answer using the codes given below the List:

  List-I (Metal forming process)		List-II (A similar process)
  A.	Blanking	1.	Wire drawing
  B.	Coining	2.	Piercing
  C.	Hemming	3.	Embossing
  D.	Cup drawing	4	Rolling
  		5.	Deep drawing

  Codes:
  A)
  A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done clear
  B)
  A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 done clear
  C)
  A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]5 done clear
  D)
  A\[\to \]3, B\[\to \]3, C\[\to \]1, D\[\to \]5 done clear
  View Solution play_arrow

• question_answer55)
  In sheet metal blanking, shear is provided on punches and dies so that:
  A)
  Press load is reduce done clear
  B)
  Good cut edges obtained done clear
  C)
  Warping of sheet is minimized done clear
  D)
  Cut blank are straight done clear
  View Solution play_arrow

• question_answer56)
  For obtaining a cup of diameter 25 mm and height 15 mm by drawing the size of the round blank should be approximately:
  A)
  42 mm              done clear
  B)
  44 mm done clear
  C)
  46 mm              done clear
  D)
  48 mm done clear
  View Solution play_arrow

• question_answer57)
  Which of the following pairs of process and draft are correctly matched?

  1.  Rolling............ 2

  2.  Extrusion............ 50

  3.  Forging ...........4

  Select the correct answer using the codes given below:
  A)
  1, 2 and 3                      done clear
  B)
  1 and 2 done clear
  C)
  1 and 3             done clear
  D)
  2 and 3 done clear
  View Solution play_arrow

• question_answer58)
  The mode of deformation of the metal during spinning is:
  A)
  Bending done clear
  B)
  Stretching done clear
  C)
  Rolling and stretching done clear
  D)
  Bending and stretching. done clear
  View Solution play_arrow

• question_answer59)
  In drop forging, forging is done by dropping:
  A)
  The work piece at high velocity done clear
  B)
  The hammer at high velocity done clear
  C)
  The die with hammer at high velocity done clear
  D)
  A weight on hammer to produce the requisite impact. done clear
  View Solution play_arrow

• question_answer60)
  Metal extrusion process is generally used for producing:
  A)
  Uniform solid sections done clear
  B)
  Uniform hollow sections done clear
  C)
  Uniform solid and hollow section done clear
  D)
  Varying solid and hollow sections. done clear
  View Solution play_arrow

• question_answer61)
  Match List-I with List-II and select the correct 6 answer

  List-I (Metal forming-process)		List-II (Associated force)
  A.	Wire drawing	1.	Shear force
  B.	Extrusion	2.	Tensile force
  C.	Blanking	3.	Compressive force
  D.	Bending	4.	Spring back force

  Codes:
  A)
  A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 done clear
  B)
  A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 done clear
  C)
  A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 done clear
  D)
  A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done clear
  View Solution play_arrow

• question_answer62)
  In wire drawing process, the bright shining surface on the wire is obtained if one:
  A)
  Does not use a lubricant                         done clear
  B)
  Low tooling cost done clear
  C)
  Uses thick paste lubricant done clear
  D)
  Use thin fluid lubricant. done clear
  View Solution play_arrow

• question_answer63)
  Which one of the following is an advantage of forging?
  A)
  Good surface finish done clear
  B)
  Low tooling cost done clear
  C)
  Close tolerance done clear
  D)
  Improved physical property done clear
  View Solution play_arrow

• question_answer64)
  For 50% penetration of work material, a punch with single shear equal to thickness will:
  A)
  Reduce the punch load to half the value done clear
  B)
  Increase the punch load by half the value done clear
  C)
  Maintain the same punch load done clear
  D)
  Reduce the punch load, to quarter load. done clear
  View Solution play_arrow

• question_answer65)
  A cup 10 cm height and 5 cm diameter is to be made from a sheet metal of 2 mm thickness. The number of deductions necessary will be:
  A)
  One                              done clear
  B)
  two done clear
  C)
  Three                done clear
  D)
  four done clear
  View Solution play_arrow

• question_answer66)
  Which of the following components can be manufactured by power metallurgy methods?

  1. Carbide tool tips

  2. Bearings

  3. Filters

  4. Brake linings.

  Select the correct answer using the codes given below:
  A)
  1, 3 and 4                      done clear
  B)
  2 and 3 done clear
  C)
  1, 2 and 4                      done clear
  D)
  1, 2, 3 and 4 done clear
  View Solution play_arrow

• question_answer67)
  Which one of the following processes in most commonly used for the forging of bolt heads of hexagonal shape?
  A)
  Closed die drop forging done clear
  B)
  Open die upset forging done clear
  C)
  Close die press forging done clear
  D)
  Open die progressive forging. done clear
  View Solution play_arrow

• question_answer68)
  The bending force required for V-bending, U-bending and Edge-bending will be in the ratio of:            
  A)
  1 : 2 : 0.5                      done clear
  B)
  2 : 1 : 0.5 done clear
  C)
  1 : 2 : 1             done clear
  D)
  1 : 1 : 1 done clear
  View Solution play_arrow

• question_answer69)
  In powder metallurgy, the operation carried out to improve the bearing property of a bush is called:    
  A)
  Infiltration                      done clear
  B)
  impregnation          done clear
  C)
  Plating               done clear
  D)
  heat treatment done clear
  View Solution play_arrow

• question_answer70)
  Consider the following processes for the manufacture of gears:

  1. Casting

  2. Powder metallurgy

  3. Machining from bar stock

  4. Closed die forging

  The correct sequence in increasing order of bending strength of gear teeth is:                         
  A)
  1, 2, 3, 4                       done clear
  B)
  1, 2, 4, 3            done clear
  C)
  2, 1, 4, 3                       done clear
  D)
  2, 1, 3, 4 done clear
  View Solution play_arrow

• question_answer71)
             Match List-I with List-II and select the correct answer  using the codes given below the List:

  List-I		List-II
  A.	Die sinking	1.	Abrasive jet machining
  B.	Deburring	2.	Laser beam machining
  C.	Fine hole drilling (thin materials)	3.	EDM
  D.	Cutting/sharpening hard materials	4.	Ultrasonic machining
  		5.	Electro chemical grinding

  Codes:
  A)
  A\[\to \]3, B\[\to \]5, C\[\to \]4, D\[\to \]1 done clear
  B)
  A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]5 done clear
  C)
  A\[\to \]3, B\[\to \]1, C\[\to \]2, D\[\to \]3 done clear
  D)
  A\[\to \]4, B\[\to \]5, C\[\to \]1, D\[\to \]5 done clear
  View Solution play_arrow

• question_answer72)
  Match List-1 with List-11 and select the correct answer using the codes given below the Lists: 

  List-I		List-II
  A.	Drawing	1.	Soap solution
  B.	Rolling	2.	Camber
  C.	Wire drawing	3.	Pilots
  D.	Sheet metal operations using progressive dies	4.	Crate
  		5.	Ironing

  Codes:
  A)
  A\[\to \]2, B\[\to \]5, C\[\to \]1, D\[\to \]4 done clear
  B)
  A\[\to \]4, B\[\to \]1, C\[\to \]5, D\[\to \]3 done clear
  C)
  A\[\to \]5, B\[\to \]2, C\[\to \]3, D\[\to \]4 done clear
  D)
  A\[\to \]5, B\[\to \]2, C\[\to \]1, D\[\to \]3 done clear
  View Solution play_arrow

• question_answer73)
  Which one of the following metal forming processes is not a high energy rate forming process?
  A)
  Electro-magnetic forming              done clear
  B)
  Roll-forming                        done clear
  C)
  Explosive forming                  done clear
  D)
  electro-hydraulic forming.  done clear
  View Solution play_arrow

• question_answer74)
              Consider the following operations involved in forging a hexagonal bolt from a round bar stock, whose diameter is equal to the bolt diameter:

  1. Flattening

  2. Upsetting

  3. Swaging

  4. Cambering

  The correct sequence of these operations is:
  A)
  1, 2, 3, 4                       done clear
  B)
  2, 3, 4, 1 done clear
  C)
  2, 4, 3, 1                       done clear
  D)
  3, 2, 1, 4 done clear
  View Solution play_arrow

• question_answer75)
  Which one of the following is the correct temperature range for hot extrusion o aluminium?
  A)
  \[300-340{}^\circ C\]     done clear
  B)
  \[350-400{}^\circ C\] done clear
  C)
  \[430-480{}^\circ C\]                 done clear
  D)
  \[550-650{}^\circ C\] done clear
  View Solution play_arrow

• question_answer76)
  The correct sequence of the given processes in manufacturing by powder metallurgy is:
  A)
  Blending, compacting sintering and sizing done clear
  B)
  Blending, compacting, sizing and sintering done clear
  C)
  Compacting, sizing, blending and sintering done clear
  D)
  Compacting, blending, sizing and sintering. done clear
  View Solution play_arrow

• question_answer77)
  In the rolling process, roll separating force can be decreased by:
  A)
  Reducing the roll diameter done clear
  B)
  Increasing the roll diameter done clear
  C)
  Providing hack-up rolls done clear
  D)
  Increasing the friction between the rolls and the metal. done clear
  View Solution play_arrow

• question_answer78)
  Consider the following statements:

  In forward extrusion process:

  (1) The ram and the extruded product travel in the same direction.

  (2) The ram and the extruded product travel in the opposite direction.

  (3) The speed of travel of the extruded product is same as that of the ram.

  (4) The speed of travel of the extruded, product is greater than that of the ram.

  Which of these statements are correct?
  A)
  1 and 3             done clear
  B)
  2 and 3 done clear
  C)
  1 and 4             done clear
  D)
  2 and 4 done clear
  View Solution play_arrow

• question_answer79)
  Which one of the following lubricants is most suitable for drawing mild steel wires:
  A)
  Sodium stearate  done clear
  B)
  Water done clear
  C)
  lime-water                      done clear
  D)
  Kerosene done clear
  View Solution play_arrow

• question_answer80)
  Best position of crank for blanking operation in a mechanical press is:
  A)
  Top dead centre done clear
  B)
  20 degrees below top dead centre done clear
  C)
  20 degrees before bottom dead centre done clear
  D)
  Bottom dead centre. done clear
  View Solution play_arrow

• question_answer81)
  Match List-I (components of a table fan) with List-II (Manufacturing processes) and select the correct answer using the codes given below the lists:

  List-I		List-II
  A.	Base with stand	1.	Stamping and pressing
  B.	Blade	2.	Wire drawing
  C.	Armature coil wire	3.	Turning
  D.	Armature shaft	4.	Casting

  Codes:
  A)
  A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done clear
  B)
  A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 done clear
  C)
  A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done clear
  D)
  A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done clear
  View Solution play_arrow

• question_answer82)
              In the forging operation, fullering is done to:
  A)
  Draw out the material done clear
  B)
  Bend the material done clear
  C)
  Upset the material done clear
  D)
  Extrude the material. done clear
  View Solution play_arrow

• question_answer83)
  Which of the following assumptions are correct for cold rolling?

  (1) The material is plastic

  (2) The arc of contact is circular with a radius greater than the radius of the roil.

  (3) Coefficient of friction is constant over the arc of contact and acts in one direction throughout the arc of contact.

  Select the correct answer using the code given below:

  Codes:
  A)
  1 and 2             done clear
  B)
  1 and 3 done clear
  C)
  2 and 3             done clear
  D)
  1, 2 and 3 done clear
  View Solution play_arrow

• question_answer84)
  A strip is to rolled from a thickness of 30 mm to 15 mm using a two-high mill having rolls of diameter 300 mm. The coefficient of friction for unaided bite should nearly be:
  A)
  0.95                              done clear
  B)
  0.5 done clear
  C)
  0.25                              done clear
  D)
  0.07 done clear
  View Solution play_arrow

• question_answer85)
  Which of the following statements are the salient features of hydrostatic extrusion?

  (1) It is suitable for soft and ductile material

  (2) It is suitable for high-strength super-alloys

  (3) The billet is inserted into the extrusion chamber and pressure is applied by a ram to extrude the billet through the die

  (4) The billet is inserted into the extrusion chamber where it is surrounded by a suitable liquid. The billet is extruded through the die by applying pressure to the liquid.

  Select the correct answer using the code given below:

  Codes:
  A)
  1 and 3             done clear
  B)
  1 and 4 done clear
  C)
  2 and 3             done clear
  D)
  2 and 4 done clear
  View Solution play_arrow

• question_answer86)
  Consider the following statements related to piercing and blanking:

  (1) Shear on the punch reduces the maximum cutting force.

  (2) Shear increases the capacity of the press needed.

  (3) Shear increases the life of the punch.

  (4) The total energy needed to make the cut remains unaltered due to provision of shear.

  Which of the above statements are correct?
  A)
  1 and 2             done clear
  B)
  1 and 4 done clear
  C)
  2 and 3             done clear
  D)
  3 and 4 done clear
  View Solution play_arrow

• question_answer87)
  Consider the following steps involved in hamrner forging a connecting rod from bar Stock

  1. Blocking

  2. Trimming

  3. Finishing

  4. Fullering

  5. Edging

  Which of the following is the correct sequence of operations?
  A)
  1, 4, 3, 2 and 5  done clear
  B)
  4, 5, 1, 3 and 2 done clear
  C)
  5, 4, 3, 2 and 1  done clear
  D)
  5, 1, 4, 2 and 3 done clear
  View Solution play_arrow

• question_answer88)
  The rate of production of a powder metallurgy par) depends on:
  A)
  Flow rate of powder done clear
  B)
  Green strength of compact done clear
  C)
  Apparent density of compact done clear
  D)
  Compressibility of powder. done clear
  View Solution play_arrow

• question_answer89)
  In rolling a strip between two rolls, the position of the neutral point in the arc of contact' does not depend on:
  A)
  Amount of reduction       done clear
  B)
  Diameter of the rolls done clear
  C)
  Coefficient of friction done clear
  D)
  Material of the rolls. done clear
  View Solution play_arrow

• question_answer90)
  Match List-I (parts) with List-II (Manufacturing processes) and select the correct answer using the codes given below the lists:

  List-I (Parts)		List-II (Manufacturing processes)
  A.	Seamless tubes	1.	Roll forming
  B.	Accurate and smooth tubes	2.	Shot peening
  C.	Surfaces having hardness and fatigue strength	3.	Forging higher
  		4.	Cold forming

  Codes:
  A)
  A\[\to \]1, B\[\to \]4, C\[\to \]2, done clear
  B)
  A\[\to \]2, B\[\to \]3, C\[\to \]1 done clear
  C)
  A\[\to \]1, B\[\to \]3, C\[\to \]2 done clear
  D)
  A\[\to \]2, B\[\to \]4, C\[\to \]1 done clear
  View Solution play_arrow

• question_answer91)
  Match List-I (Products) with List-II (Processes) and select the correct answer using the codes given below the lists:

  List-I		List-II
  A.	MS angles and channels	1.	Welding
  B.	Carburettors	2.	Forging
  C.	Roof trusses	3.	Casting
  D.	Gearwheels	4.	Rolling

  Codes:
  A)
  A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done clear
  B)
  A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done clear
  C)
  A\[\to \]1, B\[\to \]2, C\[\to \]4, D\[\to \]3 done clear
  D)
  A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 done clear
  View Solution play_arrow

• question_answer92)
  The forging defect due to hindrance to smooth flow of metal in the component called 'Lap' occurs because:
  A)
  The comer radius provided is too long done clear
  B)
  The comer radius provided is too small done clear
  C)
  Draft is not provided done clear
  D)
  The shrinkage allowance is inadequate. done clear
  View Solution play_arrow

• question_answer93)
  Magnesium is extruded and not rolled because:
  A)
  It has a low melting point                  done clear
  B)
  It has a low density                          done clear
  C)
  Its reactivity with roll material high           done clear
  D)
  It has a dose-packed hexagonal structure. done clear
  View Solution play_arrow

• question_answer94)
       Match List-I (Process) with List-II (Production of parts) and select the correct (answer using the codes given below the lists: 

  List-I		List-II
  A.	Rolling	1.	Discrete parts
  B.	Forging	2.	Rod and Wire
  C.	Extrusion	3.	Wide variety of shapes with thin walls
  D.	Drawing	4.	Flat plates and sheets
  		5.	Solid and hollow parts

  Codes:
  A)
  A\[\to \]2, B\[\to \]5, C\[\to \]3, D\[\to \]4 done clear
  B)
  A\[\to \]1, B\[\to \]2, C\[\to \]5, D\[\to \]4 done clear
  C)
  A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 done clear
  D)
  A\[\to \]4, B\[\to \]1, C\[\to \]5, D\[\to \]2    done clear
  View Solution play_arrow

• question_answer95)
                     A blank of 30 mm diameter is to be produced out of 10 mm thick sheet on a simple die. If 6% clearance is recommended, then the nominal diameters of die and punch are respectively:                 
  A)
  30.6 mm and 29.4 mm               done clear
  B)
  30.6 mm and 30 mm                   done clear
  C)
  30 mm and 29.4 mm                    done clear
  D)
  30 mm and 28.8 mm     done clear
  View Solution play_arrow

• question_answer96)
               Rolling very thin strips of mild steel requires:  
  A)
  Large diameter rolls                        done clear
  B)
  Small diameter rolls                      done clear
  C)
  High speed rolling                         done clear
  D)
  Rolling without a lubricant.  done clear
  View Solution play_arrow

• question_answer97)
                Drop forging is used to produce:
  A)
  Small components done clear
  B)
  Large components done clear
  C)
  Identical components in large numbers done clear
  D)
  Medium-size components done clear
  View Solution play_arrow

• question_answer98)
  Consider the following factors:

  1. Size and shape that can be produced economically

  2. Porosity of the parts produced.

  3. Available press capacity

  4. High density

  Which of the above are limitations of powder metallurgy?
  A)
  1, 3 and 4                      done clear
  B)
  2 and 3 done clear
  C)
  1, 2 and 3                      done clear
  D)
  1 and 2 done clear
  View Solution play_arrow

• question_answer99)
  Consider the following characteristics of rolling process:

  1. Shows work hardening effect

  2.  Surface finish is not good

  3. Heavy reduction in areas can he obtained

  Which of these characteristics are associated with hot rolling?
  A)
  1 and 2             done clear
  B)
  1 and 3 done clear
  C)
  2 and 3             done clear
  D)
  1, 2 and 3 done clear
  View Solution play_arrow

• question_answer100)
  Match List-I (Products) with List-II (Suitable processes) and select the correct answer using the codes given below the Lists:

  List-I		List-II
  A.	Connecting rods	1.	Welding
  B.	Pressure vessels	2.	Extrusion
  C.	Machine tool beds	3.	Forging
  D.	Collapsible tubes	4.	Casting

  Codes:
  A)
  A\[\to \]2, B\[\to \]5, C\[\to \]3, D\[\to \]4 done clear
  B)
  A\[\to \]1, B\[\to \]2, C\[\to \]5, D\[\to \]4 done clear
  C)
  A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 done clear
  D)
  A\[\to \]4, B\[\to \]1, C\[\to \]5, D\[\to \]2 done clear
  View Solution play_arrow

• question_answer101)
  An invicid irrotational flow field of free vortex motion has a circulation constant \[\Omega \,.\] the tangential velocity at any point in the flow field is given by \[\text{ }\!\!\Omega\!\!\text{ /r}\] where, r, is the radial distance from the centre. At the centre, there is a mathematical singularity which can be phiysically substituted by a forced vortex motion \[(r={{r}_{c}}),\] the angular velocity E is given by:
  A)
  \[\text{ }\!\!\Omega\!\!\text{ /(}{{\text{r}}_{c}}{{)}^{2}}\]                     done clear
  B)
  \[\text{ }\!\!\Omega\!\!\text{ /}{{\text{r}}_{c}}\] done clear
  C)
  \[\text{ }\!\!\Omega\!\!\text{ }\,{{\text{r}}_{c}}\]                         done clear
  D)
  \[\text{ }\!\!\Omega\!\!\text{ }\,\text{r}_{c}^{2}\] done clear
  View Solution play_arrow

• question_answer102)
  The normal stress is the same in directions at a point in a fluid only when;
  A)
  The fluid is frictional done clear
  B)
  The fluid is frictionless and incompressible done clear
  C)
  The fluid has zero viscosity and is at rest done clear
  D)
  One fluid layer has no motion relative to an adjacent layer. done clear
  View Solution play_arrow

• question_answer103)
  Which of the following forces act on a fluid at rest?

  1. Gravity force

  2. Hydrostatic force

  3. Surface tension

  4. Viscous force

  Select the correct answer using the codes given below:
  A)
  1, 2, 3 and 4                  done clear
  B)
  1, 2 and 3 done clear
  C)
  2, and 4            done clear
  D)
  1, 3 and 4 done clear
  View Solution play_arrow

• question_answer104)
  A stepped cylindrical container is filled with a liquid as shown in the given figure. The container with its axis vertical, is first placed with its larger diameter downward and then upward. The ratio of the forces at the bottom in the two cases will be:
  A)
  \[\frac{1}{2}\]                           done clear
  B)
  1 done clear
  C)
  2                                  done clear
  D)
  4 done clear
  View Solution play_arrow

• question_answer105)
  A circular annular plate having outer and inner diameters of 1.4 m and 0.6 respectively is immersed in water with its plane making an angle of \[60{}^\circ \] with the horizontal. The centre of the circular annular plate is 1.85 m below the free surface. The hydrostatic thrust on one side of the plate is:
  A)
  1975 N              done clear
  B)
  19.75 N done clear
  C)
  11.4 N               done clear
  D)
  22.8 N done clear
  View Solution play_arrow

• question_answer106)
  A house-top water tank is made of fiat plates and is full to the brim. Its height its twice that of any side. The ratio of force on the bottom of the tank to that on any side will be:
  A)
  4                                  done clear
  B)
  2 done clear
  C)
  1                                  done clear
  D)
  ½ done clear
  View Solution play_arrow

• question_answer107)
  A right-circular cylinder open at the top is filled with liquid of relative density 1.2. It is rotated about its vertical axis at such a speed that half the liquid spills out. The pressure at the centre of the bottom will be:
  A)
  Zero done clear
  B)
  One-fourth of the value when the cylinder was full done clear
  C)
  Half of the value when the cylinder was full done clear
  D)
  Not determinable from the given data. done clear
  View Solution play_arrow

• question_answer108)
  In the figure shown below, air is contained in the pipe and water is the manometer liquid. The pressure A is approximately:
  A)
  10.14 m of water absolute done clear
  B)
  0.2 m of water done clear
  C)
  1.2 of water vacuum done clear
  D)
  4901 Pa done clear
  View Solution play_arrow

• question_answer109)
  Consider the following statements:

  Filling up a part of the empty hood of a ship with ballasts will:

  1. Reduce the metacentric height

  2. Lower the position of the centre of gravity

  3. Elevate the position of centre of gravity.

  4. Elevate the position of centre of buoyancy.

  Of these statements:
  A)
  1, 3 and 4 are correct done clear
  B)
  1 and 2 are correct done clear
  C)
  3 and 4 are correct done clear
  D)
  2 and 4 are correct done clear
  View Solution play_arrow

• question_answer110)
  A cylindrical piece of cork weighing 'W floats with its axis in horizontal position in a liquid of relative density 4. By anchoring the bottom, the cork piece is made to float at natural equilibrium position with its axis vertical. The vertically downward force exerted by anchoring would be:
  A)
  0.5 W                done clear
  B)
  W done clear
  C)
  2 W                              done clear
  D)
  4 W done clear
  View Solution play_arrow