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Engineering Thermodynamics

Engineering Thermodynamics
If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to

-ve
+ve
Zero
Anywhere between zero and infinity

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Engineering Thermodynamics
The following cycle is used for air craft refrigeration

Carnot cycle
Reversed Brayton cycle
Joule cycle
Brayton cycle

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Engineering Thermodynamics
During throttling process

All of these
Heat exchange does not take place
There is no change of internal energy of steam
No work is done by expanding steam

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Engineering Thermodynamics
Charles' law states that all perfect gases change in volume by __________ of its original volume at 0°C for every 1°C change in temperature, when pressure remains constant.

1/93th
1/27th
1/273th
1/173th

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Engineering Thermodynamics
One watt is equal to

1 N/m
1 Nm/hr
1 kNm/hr
1 Nm/s

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Engineering Thermodynamics
The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)

1 - (1/ rγ - 1)
1 - rγ - 1
1 + (1/ rγ - 1)
1 + rγ - 1

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MORE MCQ ON Engineering Thermodynamics

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