Mechanical Engineering - Thermodynamics

31. 

The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

A. pv = mRT
B. pv = RTm
C. pvm = C
D. pv = (RT)m

Answer: Option A

Explanation:

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32. 

The work ratio of simple gas turbine cycle depends upon

A. maximum cycle temperature
B. minimum cycle temperature
C. pressure ratio
D. all of these

Answer: Option D

Explanation:

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33. 

The gas constant (R) is equal to the

A. sum of two specific heats
B. difference of two specific heats
C. product of two specific heats
D. ratio of two specific heats

Answer: Option B

Explanation:

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34. 

Select the wrong statement

A. A Joule cycle consists of two constant volume and two isentropic processes.
B. An Otto cycle consists of two constant volume and two isentropic processes.
C. An Ericsson cycle consists of two constant pressure and two isothermal processes.
D. all of the above

Answer: Option A

Explanation:

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35. 

One kg of hydrogen requires 8 kg of oxygen and produces

A. 1 kg of water
B. 7 kg of water
C. 8 kg of water
D. 9 kg of water

Answer: Option D

Explanation:

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