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Engineering Thermodynamics

Engineering Thermodynamics
The efficiency and work ratio of a simple gas turbine cycle are

Low
Very low
Very high
High

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Engineering Thermodynamics
A gas is compressed in a cylinder by a movable piston to a volume one half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be

30 Nm
300,000 Nm
3000 Nm
300 Nm

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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 - (1/ rγ - 1)
1 + rγ - 1
1 - rγ - 1

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Engineering Thermodynamics
The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.

Gay-Lussac law
Joule's law
Charle's law
Boyle's law

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Engineering Thermodynamics
The heat and mechanical energies are mutually convertible. This statement was established by

Charles
Boyle
Joule
None of these

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Engineering Thermodynamics
The ultimate analysis of coal consists of the determination of the percentage of

Carbon
Hydrogen and nitrogen
Sulphur and ash
All of the listed here

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MORE MCQ ON Engineering Thermodynamics

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