Railways General Science & Technology Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Sample Paper

done Current Electricity Sample Test Paper-9 Total Questions - 20    [Download]

• question_answer1)
  A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of
  A)
   More length      
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  B)
   less radius
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  C)
   Less length       
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  D)
   more radius
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• question_answer2)
  Electric iron uses wires of alloy as
  A)
   They do not oxidise at high temperatures
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  B)
   They do not bum at high temperatures
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  C)
   Both [a] and [b]
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  D)
   Neither [a] or [b]
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• question_answer3)
  Parameters of electricity supply in India are
  A)
   Potential Difference of 220 V, Frequency of 50 hertz and, Current Rating of 5 A/I5A
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  B)
   Potential Difference of 150 V, Frequency of 40 hertz and Current Rating of 10 A
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  C)
   Potential Difference of 220 V, Frequency of 60 hertz and Current Rating of 15 A
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  D)
   Potential Difference of 220 V, Frequency of 40 hertz and Current Rating of 5 A
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• question_answer4)
  Of the two bulbs in a house, one glows brighter than the other. Which of the two has a large resistance?
  A)
   The bright bulb
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  B)
   The dim bulb
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  C)
   Both have the same resistance
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  D)
   The brightness does not depend upon the resistance.
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• question_answer5)
  Domestic electrical wiring is basically a :
  A)
   Series connection
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  B)
   Parallel connection
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  C)
   Combination of series and parallel connections
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  D)
   Series connection within each room and parallel connection elsewhere
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• question_answer6)
  If an electric current is passed through a nerve of a man, then man
  A)
   Begins to laugh
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  B)
   Begins to weep
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  C)
   Is excited
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  D)
   Becomes insensitive to pain
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• question_answer7)
  The resistance of an incandescent lamp is
  A)
   Create when switched off
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  B)
   Smaller when switched on
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  C)
   Greater when switched on
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  D)
   The same whether it is switched off or switched on
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• question_answer8)
  Electromotive force is the force which is able to maintain a constant
  A)
   Current
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  B)
   Resistance
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  C)
   Power  
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  D)
   Potential difference
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• question_answer9)
  A galvanometer can be used as a voltmeter by connecting a
  A)
   High resistance in series
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  B)
   Low resistance in series
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  C)
   High resistance in parallel
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  D)
   Low resistance in parallel
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• question_answer10)
  It is easier to start a car engine on a hot day than on a cold day. This is because the internal resistance of the car battery
  A)
   Decreases with rise in temperature
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  B)
   Increases with rise in temperature
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  C)
   Decreases with a fall in temperature
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  D)
   Does not change with a change in temperature
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• question_answer11)
  How much energy in kilowatt hour is consumed in operating ten 50 watt bulbs for 10 hours per day in a month (30 days)
  A)
   1500   
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  B)
   5,000
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  C)
   15                   
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  D)
   150
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• question_answer12)
  The electric current passing through a metallic wire produces heat because of
  A)
   Collisions of conduction electrons with each other
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  B)
   Collisions of the atoms of the metal with each other
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  C)
   The energy released in the ionization of the atoms of the metal
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  D)
   Collisions of the conduction electrons with the atoms of the metallic wires
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• question_answer13)
  Electric power is transmitted over long distances through conducting wires at high voltage because
  A)
   High voltage travels faster
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  B)
   Power loss is large
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  C)
   Power loss is less
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  D)
   Generator produce electrical energy at a very high voltage
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• question_answer14)
  Watt-hour meter measures
  A)
   Electric energy
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  B)
   Current
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  C)
   Voltage
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  D)
   Power
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• question_answer15)
  Two electric bulbs A and B are rated as 60 W and 100 W. They are connected in parallel to the same source. Then,
  A)
   Both draw the same current
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  B)
   A draws more current than B
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  C)
   B draws more current than A
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  D)
   Current drawn are in the ratio of their resistances
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• question_answer16)
  An electric heater is heated respectively by d.c. and a.c. Applied voltage for both the currents is equal. The heat produced per second will be                                                   
  A)
   More on heating by a.c. source
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  B)
   More on heating by d.c. source
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  C)
   Same for both
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  D)
   None of the above
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• question_answer17)
  In charging a battery of motor-car, the following effect of electric current is used
  A)
   Magnetic          
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  B)
   Heating
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  C)
   Chemical         
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  D)
   Induction
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• question_answer18)
  Pick out the wrong statement
  A)
   In a simple battery circuit, the point of lowest, potential is the negative terminal of the battery
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  B)
   The resistance of an incandescent lamp is greater when the lamp is switched off
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  C)
   An ordinary 100 W lamp has less resistance than a 60 W lamp
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  D)
   At constant voltage, the heat developed in a uniform wire varies inversely as the length of the wire used
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• question_answer19)
  The value of internal resistance of an ideal cell is
  A)
   Zero                
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  B)
   0.5 \[\Omega \]
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  C)
   1\[\Omega \]                
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  D)
   Infinity
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• question_answer20)
  For gold plating on a copper chain, the substance required in the form of solution is
  A)
   Copper sulphate
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  B)
   Copper chloride
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  C)
   Potassium cyanide
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  D)
   Potassium aurocyanide
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