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Engineering Thermodynamics

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

21
25
23
77

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Engineering Thermodynamics
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

δQ = T.ds
δQ = T/ds
dQ = ds/T
None of the listed here

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Engineering Thermodynamics
Which of the following quantities is not the property of the system?

Pressure
Specific volume
Heat
Temperature

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Engineering Thermodynamics
In a free expansion process

Work done is zero but heat increases
Heat transfer is zero
Both (A) and (B) above
Work done is zero

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Engineering Thermodynamics
The term N.T.P. stands for

Natural temperature and pressure
Nominal temperature and pressure
Normal thermodynamic practice
Normal temperature and pressure

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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

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

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