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Engineering Thermodynamics

Engineering Thermodynamics
The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is

Greater than one
Equal to one
None of these
Less than one

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Engineering Thermodynamics
The efficiency of Diesel cycle approaches to Otto cycle efficiency when

Cut-off is constant
Cut-off is zero
Cut-off is increased
Cut-off is decreased

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Engineering Thermodynamics
A perpetual motion machine is

A non-thermodynamic machine
A hypothetical machine whose operation would violate the laws of thermodynamics
A thermodynamic machine
A hypothetical machine

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Engineering Thermodynamics
Stirling and Ericsson cycles are

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

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Engineering Thermodynamics
The variables which control the physical properties of a perfect gas are

Pressure exerted by the gas
Volume occupied by the gas
All of these
Temperature of the gas

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Engineering Thermodynamics
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

1 + (T2/T1)
1 - (T2/T1)
1 - (T1/T2)
(T1/T2) - 1

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MORE MCQ ON Engineering Thermodynamics

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