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Engineering Thermodynamics

Engineering Thermodynamics
The unit of temperature in S.I. units is

Centigrade
Celsius
Kelvin
Fahrenheit

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Engineering Thermodynamics
One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.

All of the listed here
11/4
4/7
9/7

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Engineering Thermodynamics
Energy can neither be created nor destroyed but can be converted from one form to other is inferred from

First law of thermodynamics
Second law to thermodynamics
Zeroth low of thermodynamic
Basic law of thermodynamics

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Engineering Thermodynamics
The polytropic index (n) is given by

log [(p1v1)/(p2v2)]
log (p1p2)/log (v1v2)
log (v1/ v2)/ log (p1/p2)
log (p2/ p1)/log (v1/ v2)

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

Zero
-ve
+ve
Anywhere between zero and infinity

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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)
mR (T2 - T1)
mcv (T2 - T1)

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