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Engineering Thermodynamics

Engineering Thermodynamics
The entropy __________ in an irreversible cyclic process.

Remains constant
Increases
Decreases
None of these

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Engineering Thermodynamics
General gas equation is

PV=mRT
PV=KiRT
PV = C
PV=nRT

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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
Equal to
Less than

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Engineering Thermodynamics
The following cycle is used for air craft refrigeration

Reversed Brayton cycle
Brayton cycle
Joule cycle
Carnot cycle

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Engineering Thermodynamics
If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant

Enthalpy
Temperature
Volume
Pressure

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Engineering Thermodynamics
If a gas vapour is allowed to expand through a very minute aperture, then such a process is known as

Free expansion
Throttling
Adiabatic expansion
Hyperbolic expansion

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