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Engineering Thermodynamics

Engineering Thermodynamics
The amount of heat generated per kg of fuel is known as

Heat energy
Higher calorific value
Calorific value
Lower calorific value

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Engineering Thermodynamics
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

Dual cycle, Diesel cycle, Otto cycle
Diesel cycle, Otto cycle, Dual cycle
Otto cycle, Diesel cycle, Dual cycle
Dual cycle, Otto cycle, Diesel cycle

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Engineering Thermodynamics
The polytropic index (n) is given by

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

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Engineering Thermodynamics
According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.

None of these
First kind
Second kind
Third kind

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Engineering Thermodynamics
Stirling and Ericsson cycles are

Irreversible cycles
Reversible cycles
Quasi-static cycles
Semi-reversible cycles

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Engineering Thermodynamics
The unit of universal gas constant is

None of these

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