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Engineering Thermodynamics

Engineering Thermodynamics
In closed cycle gas turbine, the air is compressed

Isothermally
Isentropically
Polytropically
None of these

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Engineering Thermodynamics
A diathermic wall is one which

Encourages thermal interaction
Discourages thermal interaction
Prevents thermal interaction
Permits thermal interaction

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Engineering Thermodynamics
The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.

Boyle's law
Joule's law
Gay-Lussac law
Charle's law

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Engineering Thermodynamics
One Joule (J) is equal to

10 kN-m/s
10 N-m/s
1 N-m
1 kN-m

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Engineering Thermodynamics
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)

mcp (T2 + T1)
mcp (T2 - T1)
mcv (T2 - T1)
mR (T2 - T1)

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Engineering Thermodynamics
The ratio of two specific heats of air is equal to

0.1
0.24
1.41
0.17

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MORE MCQ ON Engineering Thermodynamics

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