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Engineering Thermodynamics

Engineering Thermodynamics
On volume basis, air contains following parts of oxygen

23
25
21
77

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Engineering Thermodynamics
The efficiency of Stirling cycle is __________ Carnot cycle.

Equal to
Less than
Greater than
None of these

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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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Engineering Thermodynamics
Carnot cycle has maximum efficiency for

Diesel engine
Petrol engine
Irreversible engine
Reversible engine

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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
The unit of temperature in S.I. units is

Celsius
Kelvin
Centigrade
Fahrenheit

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MORE MCQ ON Engineering Thermodynamics

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