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Engineering Thermodynamics

Engineering Thermodynamics
In closed cycle gas turbine, the air is compressed

Polytropically
Isentropically
Isothermally
None of these

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Engineering Thermodynamics
An adiabatic process is one in which

The change in internal energy is equal to the mechanical work done
All of these
No heat enters or leaves the gas
The temperature of the gas changes

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Engineering Thermodynamics
In a reversible adiabatic process, the ratio of T1/T2 is equal to

(p1/p2)γ - 1/ γ
(v2/v1)γ - 1/ γ
(v1/v2)γ - 1/ γ
(p2/p1)γ - 1/ γ

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Engineering Thermodynamics
The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).

None of these
More than
Less than
Equal to

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Engineering Thermodynamics
Addition of heat at constant pressure to a gas results in

Raising its pressure
Raising its temperature
Raising its temperature and doing external work
Raising its volume

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Engineering Thermodynamics
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called

Adiabatic process
Hyperbolic process
Isothermal process
Polytropic process

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