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Engineering Thermodynamics

Engineering Thermodynamics
The value of cp/cv for air is

1.4
1.45
1
2.3

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Engineering Thermodynamics
Compressed air coming out from a punctured football

May become hotter or cooler depending upon the humidity of the surrounding air
Becomes hotter
Remains at the same temperature
Becomes cooler

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Engineering Thermodynamics
Diesel cycle consists of following four processes

Two isentropic and two constant volumes
Two isentropic and two constant pressures
Two isentropic, one constant volume and one constant pressure
Two isothermal and two isentropic

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Engineering Thermodynamics
When the expansion or compression takes place according to the law pvn = C, the process is known as

Isothermal process
Hyperbolic process
Polytropic process
Adiabatic process

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Engineering Thermodynamics
Diesel cycle consists of __________ processes.

Two constant pressure and two isentropic
One constant pressure, one constant volume and two isentropic
Two constant volume and two isentropic
Two constant volume and two isothermal

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Engineering Thermodynamics
A perpetual motion machine is

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

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MORE MCQ ON Engineering Thermodynamics

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