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1. |
Which of the following cycle is less efficient as compared to the remaining? |
A. | Carnot cycle |
B. | All have identical efficiency |
C. | Stirling cycle |
D. | Ericsson cycle |
E. | Otto cycle |
Answer» E. Otto cycle |
2. |
The number of degrees of freedom in case of triatomic gases is |
A. | 5 |
B. | 3 |
C. | 6 |
D. | 4 |
E. | 2 |
Answer» C. 6 |
3. |
At critical point the enthalpy of vaporisation is |
A. | Only dependent on temperature |
B. | Zero |
C. | Maximum |
D. | Minimum |
E. | None of the above |
Answer» B. Zero |
4. |
In which of the following case the process of sublimation can occur? |
A. | Solid nitrogen |
B. | Solid carbondioxide |
C. | Liquid air |
D. | Solid oxygen |
E. | Sodium |
Answer» B. Solid carbondioxide |
5. |
Work done in a free expansion process is |
A. | Negative |
B. | Positive |
C. | Maximum |
D. | Zero |
E. | Minimum |
Answer» D. Zero |
6. |
If a system neither exchange mass nor energy with the surroundings, it is known as |
A. | Semi-closed system |
B. | Isolated system |
C. | Inactive system |
D. | Closed system |
E. | Segregated system |
Answer» B. Isolated system |
7. |
Food can be cooked quicker in a pressure cooker because |
A. | Less heat is lost |
B. | High pressure steam has high temperature |
C. | Steam remains within the cooker |
D. | It is made of a metal |
E. | None of the above |
Answer» C. Steam remains within the cooker |
8. |
A surface which diffusely reflects and emits tha same amount of energy which it receives by radiation, is known as |
A. | A perfect surface |
B. | A perfect grey surface |
C. | A perfect white surface |
D. | A perfect radiating surface |
E. | None of the above |
Answer» D. A perfect radiating surface |
9. |
Exhaust gases from a engine possess |
A. | Chemical energy |
B. | Solar energy |
C. | Potential energy |
D. | Stored energy |
E. | Kinetic energy |
Answer» E. Kinetic energy |
10. |
Which one of the following is an indirect reaction device? |
A. | Turbojet |
B. | Ramjet |
C. | Pulsejet |
D. | Propeller |
E. | All of the above |
Answer» D. Propeller |
11. |
Cetane number of a diesel fuel is a measure of its |
A. | volatility |
B. | Pulsejet |
C. | delay period |
D. | viscosity |
E. | ignition quality |
Answer» E. ignition quality |
12. |
A thermistor is a |
A. | Thermocouple |
B. | Thermometer |
C. | Thermos flask |
D. | Miniature resistance |
E. | None of the above |
Answer» D. Miniature resistance |
13. |
Which of the following is a reversible process? |
A. | Extension and compression of a spring |
B. | Diffusion |
C. | Free expansion |
D. | Throttling |
E. | Combustion |
Answer» A. Extension and compression of a spring |
14. |
Power required for the engine is |
A. | 7.75 kW |
B. | 8.88 kW |
C. | 9.23 kW |
D. | 6.60 kW |
E. | Pulsejet |
Answer» C. 9.23 kW |
15. |
According to Charle's law |
A. | At constant pressure the volume of a gas is proportional to its temperature |
B. | At constant pressure the volume of a gas is proportional to its absolute temperature |
C. | At constant gauge pressure the molecular folume of a gas is proportional to its absolute temperature |
D. | At constant volume the absolute pressure is proportional to absolute temperature |
E. | None of the above |
Answer» A. At constant pressure the volume of a gas is proportional to its temperature |
16. |
The mean free path of a gas least depends on |
A. | volume of gas |
B. | viscosity of gas |
C. | Pulsejet |
D. | density of gas |
E. | pressure of gas |
Answer» A. volume of gas |
17. |
The value of universal gas constant in S.I. units is |
A. | 831.4 J/kg mole/?k |
B. | 8314 J/kg mole/?k |
C. | 8.314 J/kg mole/?k |
D. | 83.14 J/kg mole/?k |
E. | 0.8314 J/kg mole/?k |
Answer» B. 8314 J/kg mole/?k |
18. |
Which of the following valve is installed between the boiler and the feed pump? |
A. | Flow of c*ck |
B. | Pulsejet |
C. | Steam stop valve |
D. | Throttle valve |
E. | Feed check valve |
Answer» E. Feed check valve |
19. |
Thermodynamic equilibrium is completely defined by the specifications of |
A. | Internal energy |
B. | Enthalpy |
C. | Generalized displacements |
D. | All the above together |
E. | None of the above |
Answer» D. All the above together |
20. |
A gas (inversion temperature Ti) undergoing Joule Thomson expansion at temperature T will produce cooling effect only when |
B. | Ti < T |
C. | Ti > T |
D. | Pulsejet |
E. | Ti = T |
Answer» B. Ti < T |
21. |
During an adiabatic expansion, the increase in volume is associated with |
A. | decrease in pressure and increase in temperature |
B. | increase in pressure and decrease in temperature |
C. | Decrease in pressure and decrease in temperature |
D. | Pulsejet |
E. | increase in pressure and increase in temperature |
Answer» C. Decrease in pressure and decrease in temperature |
22. |
The mean free path of a gas molecule increases with |
A. | increase in pressure |
B. | increase in density |
C. | increase in temperature |
D. | Pulsejet |
E. | decrease in temperature |
Answer» C. increase in temperature |
23. |
In a Carnot cycle the heat is rejected at |
A. | Constant pressure |
B. | Constant temperature |
C. | Constant entropy |
D. | Constant enthalpy |
E. | Constant volume |
Answer» B. Constant temperature |
24. |
Which of the following statement is incorrect? |
A. | Total heat of steam is less than the total weight of dry and super saturated steam |
B. | Total heat of super heated steam is more than the total heat of wet steam |
C. | Latent heat of steam at critical pressure is zero |
D. | Latent heat per kg of steam decreases as the pressure of steam increases |
E. | None of the above |
Answer» D. Latent heat per kg of steam decreases as the pressure of steam increases |
25. |
Non-dimensional numbers generally involved in case of heat transfer from horizontal cylinders by natural convection are |
A. | Reynolds number |
B. | Nusselt number |
C. | Prandtl number |
D. | Grashof number |
E. | (B), (C) and (D) above |
Answer» E. (B), (C) and (D) above |
26. |
Which of the following is the best fuel for diesel engines? |
A. | Olefins |
B. | Pulsejet |
C. | Aromatics |
D. | Naphthenes |
E. | Paraffins |
Answer» E. Paraffins |
27. |
Air leaking from a punctured tube is an example of |
A. | Throttling |
B. | Constant volume expansion |
C. | Adiabatic expansion |
D. | Constant pressure expansion |
E. | Isothermal expansion |
Answer» A. Throttling |
28. |
The percentage of carbondioxide in the exhaust gases from a diesel engine cannot exceed |
A. | 40% |
B. | 50.50% |
C. | 29% |
D. | 36% |
E. | 55% |
Answer» C. 29% |
29. |
Internal energy of a perfect gas depends on |
A. | Temperature, specific heats and entropy |
B. | Temperature, specific heats and pressure |
C. | Temperature, specific heats and enthalpy |
D. | Temperature and specific heats |
E. | Temperature only |
Answer» E. Temperature only |
30. |
The process during which external work done is not zero, is |
A. | Constant volume process |
B. | Constant pressure process |
C. | Throttling |
D. | Free expansion |
E. | All of the above |
Answer» B. Constant pressure process |
31. |
Which of the following cycle consists of two isothermal and constant volume processes? |
A. | Joule cycle |
B. | Diesel cycle |
C. | Rankine cycle |
D. | Otto cycle |
E. | Ericsson cycle |
Answer» E. Ericsson cycle |
32. |
A perfect black body is |
A. | One which absorbs all radiant energy at all wavelengths |
B. | One which does not reflect the radiant energy |
C. | Black in colour |
D. | One through which radiant energy is not transmitted |
E. | One which absorbs total radiant energy |
Answer» A. One which absorbs all radiant energy at all wavelengths |
33. |
The characteristics of a control volume are |
A. | There is no material flow across the boundary |
B. | The volume, shape and position with respect to an observer may change |
C. | Pulsejet |
D. | The volume, shape and position with respect to an observer are fixed |
Answer» D. The volume, shape and position with respect to an observer are fixed |
34. |
By doubling the temperature the radiant heat will increase |
A. | 16 times |
B. | microns |
C. | 4 times |
D. | 8 times |
E. | 2 times |
Answer» A. 16 times |
35. |
Which of the following is not a property of the system |
A. | Temperature |
B. | Pressure |
C. | Specific volume |
D. | Heat |
E. | None of the above |
Answer» D. Heat |
36. |
The mixture formation in a carburettor is based on the principle of |
A. | Venturi principle |
B. | Pascal's law |
C. | Law of vapours |
D. | Daltons law |
E. | Newtons law of motion |
Answer» A. Venturi principle |
37. |
Heating wet steam at constant temperature is same as heating at |
A. | Constant pressure |
B. | Constant volume |
C. | Constant enthalpy |
D. | Constant entropy |
E. | None of the above |
Answer» A. Constant pressure |
38. |
A liquid flowing through a tube is turbulent. In which case will the maximum change in heat transfer coefficient occur? |
A. | Diameter of the tube is increased 4 time maintaining the ratio of liquid flow constant |
B. | Diameter of the tube is increased 4 times maintaining the velocity of flow constant |
C. | Diameter of the tube is increased 2 times maintaining the rate of liquid flow constant |
D. | Diameter of the tube is increased 2 times maintaining the velocity of flow constant |
E. | microns |
Answer» A. Diameter of the tube is increased 4 time maintaining the ratio of liquid flow constant |
39. |
All of the following cycles consists of two isothermal processes EXCEPT |
A. | Ericsson cycle |
B. | Stirling cycle |
C. | Brayton cycle |
D. | Carnot cycle |
E. | Pulsejet |
Answer» C. Brayton cycle |
40. |
Which of the following introduces irreversibility in the actual Carnot engine operation? |
A. | Higher operating speeds |
B. | Losses from working fluid in transit |
C. | Pulsejet |
D. | Changes in pressure and temperature during the cycle |
E. | Friction between moving parts |
Answer» B. Losses from working fluid in transit |
41. |
Which of the following is the best fuel for S.I. engines? |
A. | Naphthenes |
B. | Olefins |
C. | Aromatics |
D. | Pulsejet |
E. | Paraffins |
Answer» C. Aromatics |
42. |
The cycle generally used for gas turbines is |
A. | Brayton cycle |
B. | Carnot cycle |
C. | Dual cycle |
D. | Otto cycle |
E. | Rankine cycle |
Answer» A. Brayton cycle |
43. |
The slope of constant pressure line on temperature entropy diagrm is given by |
A. | 90? |
B. | T/Cp |
C. | Cp/T |
D. | S/T |
E. | T/S |
Answer» B. T/Cp |
44. |
In automobiles clutch is mounted between |
A. | Gear box and differential |
B. | Differential and wheels |
C. | Engine and flywheel |
D. | Engine and differential |
E. | Flywheel and gear box |
Answer» E. Flywheel and gear box |
45. |
During an adiabatic process the change in entropy is |
A. | Positive or Negative |
B. | Zero |
C. | Negative |
D. | Approximately zero |
E. | Positive |
Answer» B. Zero |
46. |
The behaviour of which of the following vapour is closer to that of a gas? |
A. | Wet vapour |
B. | Wet and superheated vapours |
C. | Wet and dry vapour |
D. | Superheated vapour |
E. | Dry vapour |
Answer» D. Superheated vapour |
47. |
The ratio of the rise in temperature of a gas when compressed adiabatically to that when compressed isothermally to the same extent is |
A. | Depends on the gas |
B. | Pulsejet |
C. | less than 1 |
D. | Equal to 1 |
E. | More than 1 |
Answer» E. More than 1 |
48. |
In all irreversible processes, the entropy of the system |
A. | Increases |
B. | Depends on medium |
C. | Remains constant |
D. | Sometimes increases and sometimes decreases |
E. | Reduces to zero |
Answer» A. Increases |
49. |
Which of the following remains constant during an adiabatic process? |
A. | internal energy |
B. | enthalpy |
C. | entropy |
D. | All of the above |
E. | Pulsejet |
Answer» C. entropy |
50. |
Reduced pressure is |
A. | dimensionless |
B. | an index of molecular position of gas |
C. | always unity |
D. | Pulsejet |
E. | always less than atmospheric pressure |
Answer» A. dimensionless |
51. |
In the polytropic process equation pvn = constant, if the value of n is infinitely large the process is termed as |
A. | Adiabatic |
B. | Constant volume |
C. | Isothermal |
D. | Constant pressure |
E. | Constant temperature |
Answer» B. Constant volume |
52. |
The ratio of the rise in temperature of a gas when compressed adiabatically to that when compressed isothermally to the same extent is |
A. | More than 1 |
B. | Less than 1 |
C. | Equal to 1 |
D. | Depends on the gas |
E. | None of the above |
Answer» A. More than 1 |
53. |
Other factors remaining constant, if the temperature of sink is increased, the efficiency of the Carnot engine will |
A. | increase or decrease depending upon temperature ratio |
B. | will not change |
C. | Pulsejet |
D. | increase |
E. | decrease |
Answer» E. decrease |
54. |
One of the most efficient engines ever developed operates between 2100 k and 700 k. Its actual efficiency is 40%. What percentage of its maximum possible efficiency is this? |
A. | 40% |
B. | 33.30% |
C. | 60% |
D. | Pulsejet |
E. | 66.67% |
Answer» C. 60% |
55. |
For any reversible process, the change in entropy of the system and surroundings is |
A. | Negative |
B. | Zero |
C. | Unity |
D. | Infinite |
E. | Positive |
Answer» B. Zero |
56. |
If all the variables of a steam are in-dependent of time it is said to be in |
A. | Unsteady flow |
B. | Uniform flow |
C. | Steady flow |
D. | Closed flow |
E. | Constant flow |
Answer» C. Steady flow |
57. |
Entropy of mixing is always |
A. | positive |
C. | Zero |
D. | Negative |
E. | Pulsejet |
Answer» A. positive |
58. |
A system comprising a single phase is called a |
A. | Open system |
B. | Isolated system |
C. | Closed system |
D. | Homogeneous system |
E. | Heterogeneous system |
Answer» D. Homogeneous system |
59. |
An open system |
A. | Is a specified region where transfers of energy and/or mass take place |
B. | Is a region of constant mass and only energy is allowed to cross the boundaries |
C. | Cannot transfer either energy or mass to or from the surroundings |
D. | Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant |
E. | None of the above |
Answer» D. Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant |
60. |
In the regenerative cycle |
A. | Power is generated in two stages |
B. | Part of the steam is withdrawn from the turbine and is utilised in heating the exhaust steam |
C. | Steam is reheated after expansion and again used |
D. | Part of the steam is withdrawn from the turbine and is used in heating the steam being supplied to the turbine |
E. | Part of the steam is withdrawn from the turbine and is used in heating the feed water |
Answer» E. Part of the steam is withdrawn from the turbine and is used in heating the feed water |
61. |
Which of the following is a path function quantity? |
A. | Work done |
B. | Pressure |
C. | Pulsejet |
D. | Temperature |
E. | Enthalpy |
Answer» A. Work done |
62. |
An ordinary mercury thermometer can be used for temperatures about |
A. | 200?C |
B. | 400?C |
C. | 300?C |
D. | 100?C |
E. | 500?C |
Answer» C. 300?C |
63. |
Triple point |
A. | Occurs in sublimation |
B. | Occurs in a mixture of two or more gases |
C. | Is the range of temperature within which three constituents simultaneously change phase |
D. | Is that point where three phases solid, liquid and gas exist together |
E. | None of the above |
Answer» D. Is that point where three phases solid, liquid and gas exist together |
64. |
The characteristics of a control volume are |
A. | The volume shape and position with respect to an observer may change |
B. | The volume shape and position with respect to an observer are fixed |
C. | There is no material flow across the boundary |
D. | Pulsejet |
E. | There is material flow across the boundary |
Answer» E. There is material flow across the boundary |
65. |
The gas turbine works on |
A. | Rankine cycle |
B. | Brayton cycle |
C. | Erricson cycle |
D. | Otto cycle |
E. | Carnot cycle |
Answer» B. Brayton cycle |
66. |
All of the following are intensive properties EXCEPT |
A. | Viscosity |
B. | Mass |
C. | Pulsejet |
D. | Density |
E. | Temperature |
Answer» B. Mass |
67. |
A body of weight 100 N falls freely through a distance of 10 m against an atmospheric drag force of 5 N. Considering the body as the system, the work interaction is |
A. | 1000 Nm |
B. | Pulsejet |
C. | 1050 Nm |
D. | 50 Nm |
E. | 950 Nm |
Answer» D. 50 Nm |
68. |
In a steam turbine when steam expands, the entropy |
A. | Decreases exponentially |
B. | Does not change |
C. | Increases exponentially |
D. | Decreases linearly |
E. | Increases linearly |
Answer» B. Does not change |
69. |
Of the following first law statements, choose the one that is wrong |
A. | the net heat transfer equals the network for a cycle |
B. | the heat transfer equals the work plus the energy change |
C. | the heat transfer cannot exceed the work done |
D. | Pulsejet |
E. | the energy of an isolated system remains constant |
Answer» C. the heat transfer cannot exceed the work done |
70. |
If the dryness fraction of a sample by throttling calorimeter is 0.8 and that by separating calorimeter is also 0.8, then the actual dryness fraction of sample will be taken as |
A. | Volume change is negligible |
B. | 1 |
C. | 0.8 |
D. | 0.5 |
E. | 0.64 |
Answer» E. 0.64 |
71. |
Work done by an expanding gas under adiabatic condition results in |
A. | Temperature decrease |
B. | Temperature decreases first and then increase |
C. | Temperature increase first and then decrease |
D. | No change in temperature |
E. | Temperature increase |
Answer» A. Temperature decrease |
72. |
Carburetted water gas is obtained by |
A. | heating water at high temperature in a copper vessel |
B. | Burning oil |
C. | spraying oil into a carburettor filled with hot brick elieckar work through which the gases pass |
D. | Pulsejet |
E. | Passing alternately steam and air through while hot carbon |
Answer» E. Passing alternately steam and air through while hot carbon |
73. |
A process which does not dissipate available energy is known as |
A. | Isothermal process |
B. | Energyless process |
C. | Adiabatic process |
D. | Ideal process |
E. | Frictionless process |
Answer» D. Ideal process |
74. |
The weight of 1 cu-m of carbon dioxide at NTP if the characteristic gas constant is 19.28 kg metre/kg/?C, would be |
A. | 3.924 kg |
B. | 2.5 kg |
C. | 1.962 kg |
D. | 1 kg |
E. | 1.5 kg |
Answer» C. 1.962 kg |
75. |
The ability of gasoline to resist detonation during combustion is given by |
A. | iso-octane number |
B. | heptane number |
C. | Pulsejet |
D. | Cetane number |
E. | Octane number |
Answer» E. Octane number |
76. |
"The internal energy of a gas is a function of temperature". Which of the following name is associated with the above law? |
A. | Regnault |
B. | Dalton |
C. | Boyle |
D. | Charle |
E. | Joule |
Answer» E. Joule |
77. |
The solubility of a gas in a liquid at small concentration is represented by |
A. | Joules equation |
B. | Van der Waal's equation |
C. | Henry's law |
D. | Claperyon equation |
E. | Roults law |
Answer» C. Henry's law |
78. |
A scavenging pump is used in |
A. | Pulsejet |
B. | vapour compression cycles |
C. | two stroke spark ignition engines |
D. | steam engines |
E. | four stroke compression ignition engines |
Answer» C. two stroke spark ignition engines |
79. |
The difference between two specific heats of a gas is equal to universal constant when |
A. | 1 mole of gas is heated |
B. | 1 gm molecule of gas is heated |
C. | 1 gm of gas is heated |
D. | Pulsejet |
E. | any amount of gas is heated |
Answer» B. 1 gm molecule of gas is heated |
80. |
Which of the following is a non-petroleum fuel? |
A. | Diesel oil |
B. | Petrol |
C. | Naphtha |
D. | Alcohol |
E. | All of the above |
Answer» D. Alcohol |
81. |
The average pressure on the walls of a vessel will be doubled if the |
A. | average velocity of the molecules in it is doubled |
B. | the number of molecules in the vessel is doubled |
C. | Pulsejet |
D. | the mass of each molecule is halved |
E. | the mass of each molecule is doubled |
Answer» B. the number of molecules in the vessel is doubled |
82. |
The fastest moving gas molecules are those of |
A. | Pulsejet |
B. | Oxygen |
C. | Hydrogen |
D. | Nitrogen |
E. | Chlorine |
Answer» C. Hydrogen |
83. |
which of the following set of quantities contains intensive variables? |
A. | Kinetic energy, potential energy and internal energy |
B. | Pulsejet |
C. | Work, energy and weight |
D. | Mass, volume and area |
E. | Pressure, temperature and density |
Answer» E. Pressure, temperature and density |
84. |
A system |
A. | Is a specified region, not necessarily of constant volume, where transfer of energy and/or mass are to be studied |
B. | Is a region of constant mass and only energy is allowed to cross the boundaries |
C. | Cannot transfer either energy or mass to or from the surroundings |
D. | Has a mass transfer across its boundaries and the mass within the system is not constant |
E. | None of the above |
Answer» A. Is a specified region, not necessarily of constant volume, where transfer of energy and/or mass are to be studied |
85. |
Transformer oil having kinematic viscosity of 3.66 x 10-6 m2/s flows through a tube 8 mm diameter at velocity of 0.6 m/s. The value of Reynolds number of flow would be |
A. | 1510 |
B. | 1000 |
C. | 1600 |
D. | 1415 |
E. | 1310 |
Answer» E. 1310 |
86. |
An isentropic process is always |
A. | Irreversible and adiabatic |
B. | Reversible and isothermal |
C. | Frictionless and irreversible |
D. | Reversible and adiabatic |
E. | None of the above |
Answer» D. Reversible and adiabatic |
87. |
In a reversible polytropic process |
A. | The entropy remains constant |
B. | Some heat transfer occurs |
C. | The internal energy remains constant |
D. | The temperature remains constant |
E. | The ethalpy remains constant |
Answer» A. The entropy remains constant |
88. |
A gas which obeys kinetic theory perfectly is known as |
A. | Monoatomic gas |
B. | Perfect gas |
C. | Diatomic gas |
D. | Real gas |
E. | Pure gas |
Answer» B. Perfect gas |
89. |
An automobile heats up while lying in a parking 10 ton a sunny day. The process can be assumed to be |
A. | isothermal |
B. | isometric |
C. | isobaric |
D. | Pulsejet |
E. | isentropic |
Answer» C. isobaric |
90. |
The efficiency of a Carnot engine is given as 0.75. If the cycle direction is reversed, what will be the value of COP of reversed Carnot cycle |
A. | 0.33 |
B. | 0.25 |
C. | 1.33 |
D. | 0.75 |
E. | 4 |
Answer» A. 0.33 |
91. |
Which rays have the least wavelength? |
A. | Infra-red |
B. | Ultraviolet |
C. | Radio |
D. | Cosmic rays |
E. | X-rays |
Answer» D. Cosmic rays |
92. |
The difference between two specific heats of a gas is equal to universal gas constant |
A. | When 1 gm molecule heated |
B. | When 1 molecule of gas is heated |
C. | When 1 gm molecule heated |
D. | When 1 gm of gas is heated |
E. | When any amount of gas is heated |
Answer» C. When 1 gm molecule heated |
93. |
1 cu-m of steam having dryness franction 0.85 at 12 ata mixes with 1.5 kg of water at 12?C at constant pressure. The dryness fraction of resulting steam would be |
A. | 0.6 |
B. | 0.5 |
C. | 0.85 |
D. | 0.637 |
E. | 0.75 |
Answer» D. 0.637 |
94. |
In centrifugal compressors, the ratio of outlet whirl velocity to blade velocity at outlet is known as |
A. | Feedback factor |
B. | Slip factor |
C. | Reheat factor |
D. | Gauge factor |
E. | Velocity factor |
Answer» B. Slip factor |
95. |
In case of centrifugal compressors the phenomenon of unsteady, periodic and reversed flow is known as |
A. | Surging |
B. | Stalling |
C. | Choking |
D. | Either of above |
E. | None of the above |
Answer» A. Surging |
96. |
A Rankine cycle working with saturated steam differs thermodynamically from a Carnot cycle only in the fact that |
A. | The Carnot cycle cannot be used for vapour |
B. | Steam is not the working substance for Carnot cycle |
C. | There are more than two sources of heat in Rankine cycle |
D. | Heat is supplied to the water at temperatures below the maximum temperature of the cycle |
E. | None of the above |
Answer» D. Heat is supplied to the water at temperatures below the maximum temperature of the cycle |
97. |
In case of ideal triatomic gas, the ratio of specific heats Cp/Cv would be |
A. | 1 |
B. | 1.33 |
C. | 1.4 |
D. | 1.41 |
E. | 1.67 |
Answer» B. 1.33 |
98. |
During adiabatic expansion which of the following remains constant |
A. | Internal energy |
B. | Temperature |
C. | Entropy |
D. | None of the above |
E. | Pulsejet |
Answer» C. Entropy |
99. |
Which of the following is a boiler accessory? |
A. | Water level indicator |
B. | Economiser |
C. | Pulsejet |
D. | Stop valve |
E. | Fusible plug |
Answer» B. Economiser |
100. |
Draught ensures supply of |
A. | Air for combustion |
B. | Feed water |
C. | Coad to the boiler |
D. | Superheated steam |
E. | Isothermal |
Answer» A. Air for combustion |
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