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Engineering Thermodynamics

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

Enthalpy
Pressure
Temperature
Volume

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Engineering Thermodynamics
Work done in an adiabatic process between a given pair of end states depends on

Particular adiabatic process
The value of index ‘n’
The end states only
The value of heat transferred

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Engineering Thermodynamics
Which of the following cycles has maximum efficiency?

Carnot
Stirling
Rankine
Brayton

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Engineering Thermodynamics
The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called

None of these
Specific heat at constant volume
Specific heat at constant pressure
kilo-Joule

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Engineering Thermodynamics
The efficiency of the Carnot cycle may be increased by

Keeping the lowest temperature constant
Increasing the highest temperature
Decreasing the highest temperature
Increasing the lowest temperature

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Engineering Thermodynamics
The mass of excess air supplied is equal to

(23/100) × Mass of excess oxygen
(23/100) × Mass of excess carbon
(100/23) × Mass of excess oxygen
(100/23) × Mass of excess carbon

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