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81
If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called
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Answer: Option A
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82
The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature and R = Gas constant)
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Answer: Option A
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83
The heat supplied to the gas at constant volume is (where m = Mass of gas, Cv = Specific heat at constant volume, Cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature and R = Gas constant)
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Answer: Option B
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84
Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, $$\gamma = \frac{{{{\text{c}}_{\text{p}}}}}{{{{\text{c}}_{\text{v}}}}},$$   known as adiabatic index and R = Gas constant)
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Answer: Option D
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85
Those substances which have so far not been resolved by any means into other substances of simpler form are called
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Answer: Option C
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86
For same compression ratio and for same heat added
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Answer: Option A
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87
The natural solid fuel is
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Answer: Option A
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88
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature and dQ = Heat absorbed or rejected)
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Answer: Option A
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89
The efficiency of a gas turbine is given by
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Answer: Option B
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90
One kg of carbon monoxide requires __________ kg of oxygen to produce $$\frac{{11}}{7}$$ kg of carbon dioxide gas.
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Answer: Option A
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