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Engineering Thermodynamics

Engineering Thermodynamics
The atomic mass of sulphur is

14
12
32
16

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Engineering Thermodynamics
General gas equation is

PV=mRT
PV=KiRT
PV=nRT
PV = C

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Engineering Thermodynamics
When the gas is cooled at constant pressure,

Its volume increases but temperature decreases
Both temperature and volume decreases
Both temperature and volume increases
Its temperature increases but volume decreases

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Engineering Thermodynamics
According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) _________ with the change in pressure and temperature of the gas.

Change
Both (A) and (B)
Do not change
None of these

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Engineering Thermodynamics
Minimum work in compressor is possible when the value of adiabatic index ā€˜n’ is equal to

1
0.75
1.27
1.35

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Engineering Thermodynamics
An adiabatic wall is one which

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

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MORE MCQ ON Engineering Thermodynamics

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