A) 641.5 K done clear
B) 537 K done clear
C) 516 K done clear
D) 498.5 K done clear
View Solution play_arrowquestion_answer2) According to the Maxwell relation, which of the following is/arc correct?
A) \[{{\left( \frac{\partial v}{\partial T} \right)}_{p}}=-\,{{\left( \frac{\partial s}{\partial p} \right)}_{T}}\] done clear
B) \[{{\left( \frac{\partial s}{\partial v} \right)}_{p}}={{\left( \frac{\partial p}{\partial T} \right)}_{v}}\] done clear
C) \[{{\left( \frac{\partial P}{\partial T} \right)}_{v}}={{\left( \frac{\partial p}{\partial s} \right)}_{v}}\] done clear
D) All of the above done clear
View Solution play_arrowquestion_answer3) Which one of the following relationships defines Gibbs' free energy G?
A) \[G=H+TS\] done clear
B) \[G=H-TS\] done clear
C) \[G=U+7S\] done clear
D) \[G=U-TS\] done clear
View Solution play_arrowquestion_answer4) Consider the following statements:
1. Two reversible adiabatics can never intersect each other. |
2. for a thermodynamic process \[\frac{dQ}{T}+1\ge 0,\] where I is the measure of irreversibility. |
A) 1 only done clear
B) 2 only done clear
C) Both 1 and 2 done clear
D) neither 1 nor 2 done clear
View Solution play_arrowA) A positive slope done clear
B) A negative slope done clear
C) Zero slope done clear
D) May have either positive or negative slope. done clear
View Solution play_arrowquestion_answer6) Which one of the following is the extensive property of a thermodynamic system?
A) Volume done clear
B) Pressure done clear
C) Temperature done clear
D) Density done clear
View Solution play_arrowA) Actual volume is greater than volume of saturated steam done clear
B) Actual volume is less than volume of saturated steam done clear
C) Actual volume is equal to volume of saturated steam done clear
D) None of the above done clear
View Solution play_arrowA) \[{{m}_{1}}\,{{M}_{1}}+{{m}_{2}}\,{{M}_{2}}+{{m}_{3}}\,{{M}_{3}}+...\] done clear
B) \[\frac{1}{{{m}_{1}}\,{{M}_{1}}+{{m}_{2}}\,{{M}_{2}}+{{m}_{3}}\,{{M}_{3}}+...}\] done clear
C) \[\frac{1}{{{m}_{1}}\,{{M}_{1}}}+\frac{1}{{{m}_{2}}\,{{M}_{2}}}+\frac{1}{{{m}_{3}}\,{{M}_{3}}}+...\] done clear
D) \[\frac{1}{\left( \frac{{{m}_{1}}}{{{M}_{1}}} \right)+\left( \frac{{{m}_{2}}}{{{M}_{2}}} \right)+\left( \frac{{{m}_{3}}}{{{M}_{3}}} \right)+...}\] done clear
View Solution play_arrowA) 0 done clear
B) 1 done clear
C) 1.5 done clear
D) 2.67 done clear
View Solution play_arrowquestion_answer10) Which one of the following is the correct statement? Two adiabatics will
A) Intersect at absolute zero temperature done clear
B) Never intersect done clear
C) Become orthogonal at absolute zero temperature done clear
D) Become parallel at absolute zero temperature done clear
View Solution play_arrowList-I | List-II | ||
A. | Irreversibility | 1. | Mechanical equivalent |
B. | Joule-Thomson experiment | 2. | Thermodynamic temperature scale |
C. | Joule?s experiment | 3. | Throttling process |
D. | Reversible engine | 4. | Loss of availability |
A) A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done clear
B) A\[\to \]1, B\[\to \]2, C\[\to \]4, D\[\to \]3 done clear
C) A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 done clear
D) A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]2 done clear
View Solution play_arrowA) Increase in air standard efficiency done clear
B) Decrease in air standard efficiency done clear
C) No change in air standard efficiency done clear
D) Increase in the efficiency but reduction in network done clear
View Solution play_arrowA) Carnot cycle done clear
B) Joule cycle done clear
C) Otto cycle done clear
D) Rankine cycle. done clear
View Solution play_arrowA) Van der Waals equation done clear
B) Benedict-Webb-Rubin equation done clear
C) Gibbs equation done clear
D) Virial equation. done clear
View Solution play_arrowA) \[{1}/{\gamma }\;\] done clear
B) \[\gamma +1\] done clear
C) \[\gamma \] done clear
D) \[\frac{1}{\gamma +1}\] done clear
View Solution play_arrowList-I | List-II | ||
A. | Air liquefaction plant | 1. | Atkinson cycle |
B. | Gas turbine with multistage compression and multistage expansion | 2. | Brayton cycle |
C. | Free piston engine/compressor with a gas turbine | 3. | Ericsson cycle |
D. | Pulse jet | 4. | Reversed Stirling cycle |
5. | Lenoir cycle |
A) A\[\to \]1, B\[\to \]2, C\[\to \]4, D\[\to \]3 done clear
B) A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 done clear
C) A\[\to \]4, B\[\to \]3, C\[\to \]1, D\[\to \]5 done clear
D) A\[\to \]4, B\[\to \]3, C\[\to \]5, D\[\to \]1 done clear
View Solution play_arrowA) 17 done clear
B) 18 done clear
C) 19 done clear
D) 20 done clear
View Solution play_arrowquestion_answer18) Consider the following statements:
The maximum temperature produced by the combustion of a unit mass of fuel depends upon |
1. L.C.V. |
2. Ash content |
3. Mass of air supplied |
4. Pressure in the furnace |
A) 1 alone is correct done clear
B) 1 and 3 are correct done clear
C) 2 and 4 are correct done clear
D) 3 and 4 are correct done clear
View Solution play_arrowA) \[{{\left( \frac{2}{n+1} \right)}^{\left( \frac{n\,\,-\,\,1}{n} \right)}}\] done clear
B) \[{{\left( \frac{2}{n+1} \right)}^{\left( \frac{n}{n\,\,-\,\,1} \right)}}\] done clear
C) \[{{\left( \frac{2}{n-1} \right)}^{\left( \frac{n}{n\,\,+\,\,1} \right)}}\] done clear
D) \[{{\left( \frac{2}{n-1} \right)}^{\left( \frac{n\,\,+\,\,1}{n} \right)}}\] done clear
View Solution play_arrowList-I (Parameter) | List-II (Property) | ||
A. | Volume | 1. | Path function |
B. | Density | 2. | Intensive property |
C. | Pressure | 3. | Extensive property |
D. | Work | 4. | Point function |
A) A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 done clear
B) A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 done clear
C) A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done clear
D) A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 done clear
View Solution play_arrowA) \[\frac{1}{1-\frac{R}{{{c}_{p}}}}\] done clear
B) \[\frac{1}{1-\frac{{{c}_{p}}}{R}}\] done clear
C) \[\frac{1}{1+\frac{{{c}_{p}}}{R}}\] done clear
D) \[\frac{1}{1+\frac{R}{{{c}_{p}}}}\] done clear
View Solution play_arrowA) \[\frac{({{T}_{2}}-{{T}_{1}})\,\,\Delta \,T+{{(\Delta \,T)}^{2}}}{{{T}_{2}}({{T}_{2}}+\Delta \,T)}\] done clear
B) \[\frac{({{T}_{2}}-{{T}_{1}})\,\,\Delta \,T+{{(\Delta \,T)}^{2}}}{{{T}_{1}}({{T}_{1}}+\Delta \,T)}\] done clear
C) \[\frac{({{T}_{1}}-{{T}_{2}})\,\,\Delta \,T+{{(\Delta \,T)}^{2}}}{{{T}_{1}}({{T}_{1}}+\Delta \,T)}\] done clear
D) \[\frac{({{T}_{1}}-{{T}_{2}})\,\,\Delta \,T+{{(\Delta T)}^{2}}}{{{T}_{1}}({{T}_{1}}+\Delta T)}\] done clear
View Solution play_arrowA) \[-\,\,8\] done clear
B) zero done clear
C) 10 done clear
D) \[-\,\,10\] done clear
View Solution play_arrowA) \[\int{\frac{dQ}{T}}\,\,=\,\,0\] and \[\Delta \,S>0\] done clear
B) \[\int{\frac{dQ}{T}\,\,=\,\,0}\] and \[\Delta \,S\,\,=\,\,0\] done clear
C) \[\int{\frac{dQ}{T}>0}\] and \[\Delta \,S\,\,=\,\,0\] done clear
D) \[\int{\frac{dQ}{T}<0}\] and \[\Delta \,S<0\] done clear
View Solution play_arrowA) \[-\,\,50\]kJ and \[-\,\,80\]kJ done clear
B) \[-\,\,50\]kJ and 80 kJ done clear
C) 50 kJ and 80 kJ done clear
D) 50 kJ and \[-\,\,80\]kJ done clear
View Solution play_arrowquestion_answer26) The mathematical conditions at the critical point for a pure substance would be:
A) \[\frac{\partial p}{\partial v}<0\,;\,\,\frac{{{\partial }^{2}}p}{\partial {{v}^{2}}}=0\] and \[\frac{{{\partial }^{3}}p}{\partial {{v}^{3}}}=0\] done clear
B) \[\frac{\partial p}{\partial v}=0\,;\,\,\frac{{{\partial }^{2}}p}{\partial {{v}^{2}}}<0\] and \[\frac{{{\partial }^{3}}p}{\partial {{v}^{3}}}=0\] done clear
C) \[\frac{\partial p}{\partial v}=0\,;\,\,\frac{{{\partial }^{2}}p}{\partial {{v}^{2}}}=0\] and \[\frac{{{\partial }^{3}}p}{\partial {{v}^{3}}}<0\] done clear
D) \[\frac{\partial p}{\partial v}=0\,;\,\,\frac{{{\partial }^{2}}p}{\partial {{v}^{2}}}=0\] and \[\frac{{{\partial }^{3}}p}{\partial \,{{v}^{3}}}\,\,=\,\,0\] done clear
View Solution play_arrowA) \[-\,\,p/v\] done clear
B) \[-\,\,v/p\] done clear
C) \[-1/(pv)\] done clear
D) \[-\,\,pv\] done clear
View Solution play_arrowquestion_answer28) Forced draught fans of a large steam generator have:
A) Backward curved blades done clear
B) Forward curved blades done clear
C) Straight or radial blades done clear
D) Double curved blades done clear
View Solution play_arrowA) \[48.6{}^\circ C\] done clear
B) \[167{}^\circ C\] done clear
C) \[267{}^\circ C\] done clear
D) \[367{}^\circ C\] done clear
View Solution play_arrowA) Same compression ratio and same heat input done clear
B) Same maximum pressure and same heat input done clear
C) Same maximum pressure and same output done clear
D) Same maximum pressure and same maximum temperature done clear
View Solution play_arrow1. Subsonic nozzle |
2. Supersonic nozzle |
3. Subsonic diffuser |
4. Supersonic diffuser |
A) 1 only done clear
B) 2 and 3 done clear
C) 1 and 4 done clear
D) 3 only done clear
View Solution play_arrowA) \[-\,\int{p\,\,dv}\] done clear
B) \[+\,\int{p\,\,dv}\] done clear
C) \[-\,\int{v\,\,dp}\] done clear
D) \[+\,\int{v\,\,dp}\] done clear
View Solution play_arrowA) Temperature done clear
B) Enthalpy done clear
C) Entropy done clear
D) Pressure done clear
View Solution play_arrowA) Heat transfer is zero done clear
B) Change in internal energy is equal to work transfer done clear
C) Work transfer is zero done clear
D) Heat transfer is equal to work transfer. done clear
View Solution play_arrowA) 1.8 bar done clear
B) 11 bar done clear
C) 0.8 bar done clear
D) The same as at \[27{}^\circ C\] done clear
View Solution play_arrow1. Isothermal process |
2. Adiabatic process |
3. The law \[p{{v}^{1.1}}\,\,=\,\] constant |
A) 1, 2, 3 done clear
B) 1, 3, 2 done clear
C) 2, 3, 1 done clear
D) 3, 1, 2. done clear
View Solution play_arrowquestion_answer37) Triple point temperature of water is:
A) 2 73 K done clear
B) 273.14 K done clear
C) 273.15 K done clear
D) 273.16 K. done clear
View Solution play_arrowA) 20 kJ done clear
B) 60 kJ done clear
C) 80 kJ done clear
D) 120 kJ done clear
View Solution play_arrowList-I | List-II | ||
A. | The entropy of a pure crystalline substance is zero at absolute zero temperature | 1. | First law of thermodynamics |
B. | Spontaneous processes occur in a certain direction | 2. | Second law of thermodynamics |
C. | If two bodies are in thermal equilibrium with a third body, then they are also in thermal equilibrium with each other | 3. | Third law of thermodynamics |
D. | The law of conservation of energy | 4. | Zeroth law of thermodynamics |
A) A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 done clear
B) A\[\to \]3, B\[\to \]2, C\[\to \]1, D\[\to \]4 done clear
C) A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 done clear
D) A\[\to \]2, B\[\to \]3, C\[\to \]1, D\[\to \]4 done clear
View Solution play_arrowA) 6 kJ/K done clear
B) 4 kJ/K done clear
C) 2 kJ/K done clear
D) zero. done clear
View Solution play_arrowA) \[\varepsilon \,\,=\,\,\frac{Increase\,\,of\,\,availability\,\,of\,\,the\,\,surroundings}{Loss\,\,of\,\,availability\,\,of\,\,the\,\,system}\] done clear
B) \[\varepsilon \,\,=\,\,\frac{Increase\,\,of\,\,availability\,\,of\,\,the\,\,system}{Loss\,\,of\,\,availability\,\,of\,\,the\,\,surroundings}\] done clear
C) \[\varepsilon \,\,=\,\,\frac{Loss\,\,of\,\,availability\,\,of\,\,the\,\,surroundings}{Increase\,\,of\,\,availability\,\,of\,\,the\,\,system}\] done clear
D) \[\varepsilon \,\,=\,\,\frac{Loss\,\,of\,\,availability\,\,of\,\,the\,\,system}{Increase\,\,of\,\,availability\,\,of\,\,the\,\,surroundings}\] done clear
View Solution play_arrowList-I (Cycle) | List-II (Process) | ||
A. | Otto | 1. | Two isothermal and two constant volume |
B. | Stirling | 2. | Two isothermal and two isobar |
C. | Ericsson | 3. | Two isentropic and two isobar |
D. | Brayton | 4. | Two isentropic and two constant volume |
5. | Two isentropic and two isothermal |
A) A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 done clear
B) A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]5 done clear
C) A\[\to \]1, B\[\to \]4, C\[\to \]2, D\[\to \]5 done clear
D) A\[\to \]1, B\[\to \]4, C\[\to \]5, D\[\to \]3 done clear
View Solution play_arrowquestion_answer43) The specific heat \[{{c}_{p}}\] is given by:
A) \[T{{\left( \frac{\partial \,v}{\partial \,T} \right)}_{p}}\] done clear
B) \[T{{\left( \frac{\partial \,v}{\partial \,S} \right)}_{p}}\] done clear
C) \[T{{\left( \frac{\partial \,S}{\partial \,T} \right)}_{p}}\] done clear
D) \[T{{\left( \frac{\partial \,T}{\partial \,v} \right)}_{p}}\] done clear
View Solution play_arrowA) Can be calculated by joining the two states on\[p-v\]Coordinates by any path and estimating the area below done clear
B) Can be calculated by joining the two states by quasi-static path and then finding the area below done clear
C) Is zero done clear
D) Is equal to heat generated by friction during? Expansion done clear
View Solution play_arrowquestion_answer45) Consider the following statements:
(1) The Second Law analysis can be applied to thermodynamic cycles only and not to individual processes. |
(2) The Second Law analysis clearly gives an idea about the irreversibilities in the heat exchangers whereas no idea is obtained from the First Law analysis. |
A) 1 only done clear
B) 2 only done clear
C) Both 1 and 2 done clear
D) neither 1 nor 2 done clear
View Solution play_arrow1. When a system executes a cyclic process, network transfer is equal to net heat transfer. |
2. It is impossible to construct an engine, that operating in a cycle will produce no other effect than the extraction of heat from a reservoir and performance of an equivalent amount of work. |
3. It is impossible by any procedure, no matter how idealized, to reduce any system the absolute zero of temperature in a finite number of operations |
4. It is impossible to construct a device that operating in a cycle will produce no effect other than transfer of heat from a cooler to hotter body. |
A) 1, 2 and 4 done clear
B) 2 and 4 done clear
C) 2, 3 and 4 done clear
D) 2 and 3 done clear
View Solution play_arrowquestion_answer47) Clausius inequality is stated as:
A) \[\oint{\delta Q<0}\] done clear
B) \[\oint{\delta Q\,\,=\,\,0}\] done clear
C) \[\oint{\frac{\delta Q}{T}>0}\] done clear
D) \[\oint{\frac{\delta Q}{T}\le 0}\] done clear
View Solution play_arrowA) 30 kW done clear
B) 20 kW done clear
C) 10 kW done clear
D) 5 kW done clear
View Solution play_arrowA) 200 MW done clear
B) 400 MW done clear
C) 600 MW done clear
D) 800 MW done clear
View Solution play_arrowA) \[-\,\,123{}^\circ C\] done clear
B) \[54{}^\circ C\] done clear
C) \[327{}^\circ C\] done clear
D) \[600{}^\circ C\] done clear
View Solution play_arrowA) 2.1 kJ/K and 70% done clear
B) \[-\,\,0.9\] kJ/K and 25% done clear
C) \[+\,\,0.9\] kJ/K and 70% done clear
D) \[-\,\,2.1\] kJ/K and 50% done clear
View Solution play_arrowA) Absence of oxygen in exhaust done clear
B) Absence of nitrogen in exhaust done clear
C) Absence of free carbon in exhaust done clear
D) Absence of carbon monoxide in exhaust done clear
View Solution play_arrowA) \[{{O}_{2}}\] and \[{{N}_{2}}\] done clear
B) \[{{O}_{2}}\] and \[C{{O}_{2}}\] done clear
C) \[C{{O}_{2}}\] CO and \[{{N}_{2}}\] done clear
D) \[{{N}_{2}},\] \[{{O}_{2}},\] \[C{{O}_{2}}\] and CO done clear
View Solution play_arrowquestion_answer54) In isentropic flow between two points:
A) The stagnation pressure decreases in the direction of flow done clear
B) The stagnation temperature and stagnation pressure decrease with increase in the velocity done clear
C) The stagnation temperature and stagnation pressure may vary done clear
D) The stagnation temperature and stagnation pressure remain constant done clear
View Solution play_arrowquestion_answer55) Work done in a free expansion process is:
A) Positive done clear
B) negative done clear
C) Zero done clear
D) maximum done clear
View Solution play_arrowList-I (Quantity) | List-II (Measuring Device) | ||
A. | Engine speed | 1. | Manometer |
B. | Fuel heating value | 2. | Tachometer |
C. | Air velocity | 3. | Hydrometer |
D. | Relative humidity of air | 4. | Calorimeter |
5. | Hygrometer |
A) A\[\to \]2, B\[\to \]5, C\[\to \]1, D\[\to \]4 done clear
B) A\[\to \]1, B\[\to \]5, C\[\to \]3, D\[\to \]4 done clear
C) A\[\to \]2, B\[\to \]4, C\[\to \]1, D\[\to \]5 done clear
D) A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]5 done clear
View Solution play_arrowA) The system is closed one and process takes place in non-flow system. done clear
B) The process is non-quasi-static. done clear
C) The boundary of the system should not move in order that work may be transferred. done clear
D) If the system is open one, it should be non- reversible done clear
View Solution play_arrowquestion_answer58) Variation of pressure and volume at constant temperature are correlated through:
A) Charles' law done clear
B) Boyle's law done clear
C) Joule's law done clear
D) Gay Lussac's law done clear
View Solution play_arrowquestion_answer59) The velocity of sound in an ideal gas does not depend on:
A) The specific heat ratio of the gas done clear
B) The molecular weight of the gas done clear
C) The temperature of the gas done clear
D) The density of the gas done clear
View Solution play_arrowList-I | List-II | ||
A. | Joule-Thomson coefficient | 1. | 5/2 R |
B. | \[{{c}_{p}}\] for monoatomic gas | 2. | \[{{c}_{v}}\] |
C. | \[{{c}_{p}}-{{c}_{v}}\] for diatomic gas | 3. | R |
D. | \[{{\left( \frac{\partial U}{\partial T} \right)}_{v}}\] | 4. | \[{{\left( \frac{\partial T}{\partial p} \right)}_{h}}\] |
A) A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 done clear
B) A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 done clear
C) A\[\to \]3, B\[\to \]1, C\[\to \]4, D\[\to \]2 done clear
D) A\[\to \]4, B\[\to \]2, C\[\to \]3, D\[\to \]1 done clear
View Solution play_arrowquestion_answer61) An inventor claims that heat engine has the following specifications:
Power developed = 50 kW, |
Fuel burned per hour = 3 kg |
Heating value of fuel = 75,000 kJ per kg |
Temperature limits = \[627{}^\circ C\] and \[27{}^\circ C\] |
Cost of fuel =Rs. 30/kg. |
Value of power = Rs. 5/kWh, |
A) Possible done clear
B) not possible done clear
C) Economical done clear
D) uneconomical done clear
View Solution play_arrowquestion_answer62) In a normal shock wave in one-dimensional flow:
A) Pressure, density and temperature increase done clear
B) Velocity, temperature and density increase done clear
C) Pressure, density and temperature decrease done clear
D) Velocity, pressure and density decrease done clear
View Solution play_arrowA) Isothermal done clear
B) Isochoric done clear
C) Isentropic done clear
D) Polytropic done clear
View Solution play_arrowquestion_answer64) A system executes a cycle there are four heat transfers:
\[{{Q}_{12}}\,\,=\,220\,kJ,\] \[{{Q}_{23}}=-\,25\,\,kJ,\] \[{{Q}_{34}}=-\,180\,\,kJ,\] \[{{Q}_{41}}\,\,=\,\,50\,\,kJ.\] |
The work during three of the processes is: |
A) \[-\,\,230\,kJ\] done clear
B) 0 kJ done clear
C) 230 kJ done clear
D) 130 kJ done clear
View Solution play_arrowquestion_answer65) Which one of the following statements is not correct?
A) Change in entropy during a reversible adiabatic process is zero. done clear
B) Entropy increases with the addition of heat. done clear
C) Throttling is a constant entropy expansion process. done clear
D) Change in entropy when a gas is heated under constant pressure is given by\[{{s}_{2}}-{{s}_{1}}=m{{c}_{p}}\,\,lo{{g}_{e}}\,\frac{{{T}_{2}}}{{{T}_{1}}}\] done clear
View Solution play_arrowA) \[u+{{p}_{0}}v-{{T}_{0}}s\] done clear
B) \[u-{{p}_{0}}v+{{T}_{0}}s\] done clear
C) \[h+{{p}_{0}}v+{{T}_{0}}s\] done clear
D) \[h-{{p}_{0}}v+{{T}_{0}}s\] done clear
View Solution play_arrowA) \[\frac{dp}{dt}=\frac{({{h}_{g}}-{{h}_{f}})}{({{v}_{g}}-{{v}_{f}})}\] done clear
B) \[\frac{dp}{dt}=\frac{({{h}_{g}}-{{h}_{f}})}{T\,({{v}_{g}}-{{v}_{f}})}\] done clear
C) \[\frac{dp}{dt}=\frac{({{h}_{g}}-{{h}_{f}})}{T}\] done clear
D) \[\frac{dp}{dt}=\frac{({{v}_{g}}-{{v}_{f}})T}{({{h}_{g}}-{{h}_{f}})}\] done clear
View Solution play_arrowA) Stirling cycle done clear
B) Atkinson cycle done clear
C) Ericsson cycle done clear
D) Brayton cycle done clear
View Solution play_arrowA) 1.25 done clear
B) 1.3 done clear
C) 1.4 done clear
D) 1.2 done clear
View Solution play_arrowA) Zero done clear
B) \[{{c}_{p}}/{{c}_{v}}\] done clear
C) R done clear
D) RT done clear
View Solution play_arrowquestion_answer71) or a non-flow constant pressure process, the heat exchange is equal to:
A) Zero done clear
B) The work done done clear
C) The change in internal energy done clear
D) The change in enthalpy done clear
View Solution play_arrowquestion_answer72) For a real thermodynamic cycle:
A) \[\oint{\frac{dQ}{T}}>but<\infty \] done clear
B) \[\oint{\frac{dQ}{T}}<0\] done clear
C) \[\oint{\frac{dQ}{T}}=0\] done clear
D) \[\oint{\frac{dQ}{T}}=\infty \] done clear
View Solution play_arrowquestion_answer73) A higher value of Van der Waals constant for a gas indicates that the:
A) Molecules of the gas have smaller diameter done clear
B) Gas can be easily liquified done clear
C) Gas has higher molecular weight done clear
D) Gas has lower molecular weight done clear
View Solution play_arrowA) 70 m/s done clear
B) 245 m/s done clear
C) 450 m/s done clear
D) 700 m/s done clear
View Solution play_arrowA) \[+\,\,7000\,\,J\] done clear
B) \[-\,\,7000\,\,J\] done clear
C) \[+\,\,5000\,\,J\] done clear
D) \[-\,\,5000\,\,J\] done clear
View Solution play_arrowA) \[-\,\,10\,\,kJ/K\] done clear
B) \[-\,\,5\,\,kJ/K\] done clear
C) \[5\,\,kJ/K\] done clear
D) \[10\,\,kJ/K\] done clear
View Solution play_arrowList-I | List-II | ||
A. | Bottle filling of gas | 1. | Absolute zero temperature |
B. | Nernst-Simon statement | 2. | Variable flow |
C. | Joule-Thomson effect | 3. | Quasi-static path |
D. | \[\int{p\,\,dv}\] | 4. | Isenthalpic process |
5. | Dissipative effect | ||
6. | Low grade energy | ||
7. | Pressure and temperature during phase change |
A) A\[\to \]6, B\[\to \]5, C\[\to \]4, D\[\to \]3 done clear
B) A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 done clear
C) A\[\to \]2, B\[\to \]5, C\[\to \]7, D\[\to \]4 done clear
D) A\[\to \]6, B\[\to \]1, C\[\to \]7, D\[\to \]4 done clear
View Solution play_arrowA) Necessarily positive done clear
B) Necessarily negative done clear
C) Always zero done clear
D) Negative or positive but not zero done clear
View Solution play_arrowA) 66 W done clear
B) 56 W done clear
C) 46 W done clear
D) 36 W done clear
View Solution play_arrowA) \[\left( \frac{{{T}_{1}}-{{T}_{2}}}{{{T}_{1}}} \right)\,\,\left( \frac{{{T}_{3}}}{{{T}_{2}}-{{T}_{3}}} \right)\] done clear
B) \[\left( \frac{{{T}_{2}}}{{{T}_{1}}-{{T}_{2}}} \right)\,\,\left( \frac{{{T}_{2}}-{{T}_{3}}}{{{T}_{3}}} \right)\] done clear
C) \[\left( \frac{{{T}_{1}}}{{{T}_{1}}-{{T}_{2}}} \right)\,\,\left( \frac{{{T}_{3}}}{{{T}_{2}}-{{T}_{3}}} \right)\] done clear
D) \[\left( \frac{{{T}_{3}}}{{{T}_{1}}-{{T}_{3}}} \right)\,\,\left( \frac{{{T}_{1}}}{{{T}_{2}}-{{T}_{1}}} \right)\] done clear
View Solution play_arrowList-I | List-II | ||
A. | Reversible cycle | 1. | Measurement of temperature |
B. | Mechanical work | 2. | Clapeyron equation |
C. | Zeroth Law | 3. | Clausius Theorem |
D. | Heat | 4. | High grade energy |
5. | \[{{3}^{rd}}\] Law of thermodynamics | ||
6. | In exact differential |
A) A\[\to \]3, B\[\to \]4, C\[\to \]1, D\[\to \]6 done clear
B) A\[\to \]2, B\[\to \]6, C\[\to \]1, D\[\to \]3 done clear
C) A\[\to \]3, B\[\to \]1, C\[\to \]5, D\[\to \]6 done clear
D) A\[\to \]1, B\[\to \]4, C\[\to \]5, D\[\to \]2 done clear
View Solution play_arrowquestion_answer82) A. closed thermodynamic system is one in which:
A) There is no energy or mass transfer across the boundary done clear
B) There is no mass transfer, but energy transfer exists done clear
C) There is no energy transfer. But mass transfer exists done clear
D) Both energy and mass transfer take place across the boundary, but the mass transfer is controlled by valves done clear
View Solution play_arrowA) 1 and 1 kW done clear
B) 1 and 2 kW done clear
C) 2 and 1 kW done clear
D) 2 and 2 kW done clear
View Solution play_arrowA) Zero done clear
B) unity done clear
C) 1.50 done clear
D) 2.67 done clear
View Solution play_arrowA) \[{{\left( \frac{\partial p}{\partial T} \right)}_{v}}\,{{\left( \frac{\partial v}{\partial T} \right)}_{p}}\,{{\left( \frac{\partial v}{\partial p} \right)}_{T}}\,=-\,\,1\] done clear
B) \[{{\left( \frac{\partial p}{\partial T} \right)}_{v}}\,{{\left( \frac{\partial T}{\partial v} \right)}_{p}}\,{{\left( \frac{\partial v}{\partial p} \right)}_{T}}=-\,\,1\] done clear
C) \[{{\left( \frac{\partial p}{\partial T} \right)}_{v}}\,{{\left( \frac{\partial v}{\partial T} \right)}_{p}}\,{{\left( \frac{\partial p}{\partial v} \right)}_{T}}=-\,\,1\] done clear
D) \[{{\left( \frac{\partial p}{\partial T} \right)}_{v}}={{\left( \frac{\partial T}{\partial v} \right)}_{p}}\,{{\left( \frac{\partial p}{\partial v} \right)}_{T}}\] done clear
View Solution play_arrowA) W = 90 kJ and Q = 90 kJ done clear
B) W = 180 kJ and Q = 0 done clear
C) W = 270 kJ and Q = 0 done clear
D) W = 90 kJ and Q = 180 kJ done clear
View Solution play_arrowList-I | List-II | ||
A. | Heat | 1. | PMM-2 |
B. | Engine | 2. | High grade energy |
C. | Stirring work | 3. | Variable flow |
D. | Mechanical work | 4. | Nernst-Simon statement |
5. | Dissipative | ||
6. | Inexact differential | ||
7. | PMM-1 |
A) A\[\to \]2, B\[\to \]5, C\[\to \]4, D\[\to \]3 done clear
B) A\[\to \]2, B\[\to \]1, C\[\to \]5, D\[\to \]7 done clear
C) A\[\to \]6, B\[\to \]5, C\[\to \]4, D\[\to \]2 done clear
D) A\[\to \]6, B\[\to \]1, C\[\to \]5, D\[\to \]2 done clear
View Solution play_arrowA) 50 kJ done clear
B) 70 kJ done clear
C) 120 kJ done clear
D) 170 kJ done clear
View Solution play_arrowA) 450 kJ rejected to thermal reservoir C done clear
B) 350 kJ rejected to thermal reservoir C done clear
C) 250 kJ rejected to thermal reservoir C done clear
D) 200 kJ rejected to thermal reservoir C done clear
View Solution play_arrowA) 0 and 150 J/K done clear
B) 150 J/K and 0 done clear
C) 300 J/K and 0 done clear
D) 0 and 300 J/K done clear
View Solution play_arrowA) Reversible done clear
B) Irreversible done clear
C) Impossible done clear
D) Not identifiable with the data given done clear
View Solution play_arrowA) 700 K done clear
B) 650 K done clear
C) 350 K done clear
D) Not possible to be estimated with the given data done clear
View Solution play_arrowquestion_answer93) Which one of the following is the correct statement?
A) The Mach number is less than 1 at a point where the entropy is maximum whether it is Rayleigh or Fanno line. done clear
B) A normal shock can appear in subsonic flow. done clear
C) The downstream Mach number across a normal shock is mate than one. done clear
D) The stagnation pressure across a normal shock decreases. done clear
View Solution play_arrowquestion_answer94) What is/are the effect (s) of super saturation in nozzle flow?
1. It increases the mass flow. |
2. It increases friction in the nozzle. |
3. It increases exit velocity. |
4. It reduces dryness fraction of steam. |
A) 1 only done clear
B) 1 and 3 done clear
C) 1, 2 and 4 done clear
D) 3 only done clear
View Solution play_arrowquestion_answer95) Consider the following statements:
A tube section diverging in the direction of fluid flow can be used as |
1. Supersonic nozzle |
2. Subsonic nozzle |
3. Supersonic diffuser |
4. Subsonic diffuser |
A) 1 only done clear
B) 1 and 4 done clear
C) 3 only done clear
D) 2 and 3 done clear
View Solution play_arrowA) Normal shock done clear
B) Oblique shock done clear
C) Bow shock done clear
D) Air shock done clear
View Solution play_arrowquestion_answer97) What does choked flow through a steam nozzle mean?
1. Discharge is maximum |
2. Discharge is zero |
3. Throat velocity is sonic |
4. Exit pressure is less than or equal to critical pressure |
A) 1 only done clear
B) 2 only done clear
C) 1 and 3 only done clear
D) 1, 3 and 4 done clear
View Solution play_arrowA) Decreasing pressure done clear
B) Flow separation done clear
C) Normal shock done clear
D) Increasing pressure done clear
View Solution play_arrowA) Thermodynamic properties done clear
B) Extensive properties done clear
C) Intensive properties done clear
D) None of the above done clear
View Solution play_arrowA) \[110{}^\circ N\] done clear
B) \[180{}^\circ N\] done clear
C) \[210{}^\circ N\] done clear
D) \[280{}^\circ N\] done clear
View Solution play_arrow1. Pressure |
2. Temperature |
3. Entropy |
4. Specific volume |
5. Enthalpy |
6. Internal energy |
A) 1, 2, 6, 5 done clear
B) 4, 2, 3, 5 done clear
C) 6, 4, 1 done clear
D) 4, 5, 2, 1 done clear
View Solution play_arrowA) \[\left( \frac{\gamma -n}{\gamma -1} \right)\times \] work done done clear
B) \[{{\left( \frac{\gamma -n}{\gamma -1} \right)}^{2}}\times \] work done done clear
C) \[{{\left( \frac{\gamma -n}{\gamma -1} \right)}^{3}}\times \] work done done clear
D) \[\left( \frac{\gamma -n}{1-n} \right)\times \]work done done clear
View Solution play_arrowA) Zero done clear
B) \[+\,\,10\,\,kJ\] done clear
C) \[-\,\,10\,\,kJ\] done clear
D) \[-\,\,20\,\,kJ\] done clear
View Solution play_arrowA) Mercury thermometer done clear
B) Alcohol thermometer done clear
C) Ideal gas thermometer done clear
D) Resistance thermometer done clear
View Solution play_arrowA) 25 kJ done clear
B) 50 kJ done clear
C) 75 kJ done clear
D) 100 kJ done clear
View Solution play_arrowA) The amount of heat energy rejected must be 150 kJ done clear
B) The amount of heat energy rejected must be less than 150 kJ done clear
C) (e) The amount of heat energy rejected must be greater than 150 kJ done clear
D) It is not possible to make any statement regarding the amount of heat energy rejected per cycle from the data given done clear
View Solution play_arrowA) 3.5 done clear
B) 5.5 done clear
C) 2.5 done clear
D) 6.5 done clear
View Solution play_arrowA) 0.60 done clear
B) 0.78 done clear
C) 1.78 done clear
D) None of the above done clear
View Solution play_arrowA) 0.5 done clear
B) 1.0 done clear
C) 2.0 done clear
D) 25 done clear
View Solution play_arrowA) 20 kW done clear
B) 35 kW done clear
C) 80 kW done clear
D) 100 kW done clear
View Solution play_arrowA) 40 kJ done clear
B) 60 KJ done clear
C) 120 kJ done clear
D) 180 kJ done clear
View Solution play_arrowquestion_answer112) Thermodynamic work is the product of:
A) Two intensive properties done clear
B) Two extensive properties done clear
C) An intensive property and change in an extensive property done clear
D) An extensive property and change in an intensive property done clear
View Solution play_arrowA) 0.45 done clear
B) 0.66 done clear
C) 0.75 done clear
D) 0.82 done clear
View Solution play_arrowA) \[dh-vdp\] done clear
B) \[dh+vdp\] done clear
C) \[dh-pdv\] done clear
D) \[dh+pdv\] done clear
View Solution play_arrowA) Sub cooled water done clear
B) Saturated water done clear
C) Wet steam done clear
D) Saturated steam done clear
View Solution play_arrowA) \[\Delta u={{c}_{v}}\times \Delta T\] done clear
B) \[\Delta u={{c}_{p}}\times \Delta T\] done clear
C) \[\Delta u=\frac{{{c}_{p}}}{{{c}_{v}}}\times \Delta T\] done clear
D) \[\Delta u=\left( {{c}_{p}}-{{c}_{v}} \right)\Delta T\] done clear
View Solution play_arrowquestion_answer117) Which of the following are pure substances?
1. Steam and water mixture in a container |
2. Atmospheric air |
3. Air and liquid air in a container |
4. Gaseous combustion products |
Select the correct answer using the codes given below: |
A) 1, 2 and 3 and 4 done clear
B) 2, 3 and 4 done clear
C) 1, 3 and 4 done clear
D) 1, 2 and 4 done clear
View Solution play_arrowA) Temperature and pressure of the mixture done clear
B) Temperature of the mixture and the partial pressure of the constituents done clear
C) Temperature and volume of the mixture done clear
D) Pressure and volume of the mixture done clear
View Solution play_arrowquestion_answer119) The Gibbs free-energy function is a property comprising:
A) Pressure, volume and temperature done clear
B) Enthalpy, temperature and entropy done clear
C) Temperature, pressure and enthalpy done clear
D) Volume, enthalpy and entropy done clear
View Solution play_arrowA) 22.1 kJ/K done clear
B) 30.2 kJ/K done clear
C) 61.4 kJ/K done clear
D) 82.1 kJ/K done clear
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