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Engineering Thermodynamics

Engineering Thermodynamics
The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is

Equal to one
Greater than one
None of these
Less than one

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

21
73
25
23

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Engineering Thermodynamics
Change in enthalpy of a system is the heat supplied at

Constant volume
Constant temperature
Constant entropy
Constant pressure

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Engineering Thermodynamics
In an isothermal process

There is no change in temperature
All of the listed here
There is no change in enthalpy
There is no change in internal energy

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Engineering Thermodynamics
When coal is first dried and then crushed to a fine powder by pulverizing machine, the resulting fuel is called

Briquetted coal
Bituminous coal
Wood charcoal
None of these

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Engineering Thermodynamics
A cycle consisting of ___ and two isothermal processes is known as Stirling cycle.

Two constant pressure
One constant pressure, one constant volume
Two constant volume
Two isentropic

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