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Engineering Thermodynamics

Engineering Thermodynamics
Work done in a free expansion process is

Maximum
Minimum
Zero
Positive

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Engineering Thermodynamics
In an ideal gas turbine plant, it is assumed that the compression and expansion processes are

Isentropic
Isothermal
Polytropic
None of these

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Engineering Thermodynamics
The heat and work are mutually convertible. This statement is called ___ law of thermodynamics.

Second
First
Third
Zeroth

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Engineering Thermodynamics
The increase in entropy of a system represents

Increase in temperature
Decrease in pressure
Degradation of energy
Increase in availability of energy

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Engineering Thermodynamics
The general law of expansion or compression is pvn = C, The process is said to be hyperbolic, if n is equal to

∝
γ
1

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Engineering Thermodynamics
The main cause for the irreversibility is

All of these
Mechanical and fluid friction
Heat transfer with a finite temperature difference
Unrestricted expansion

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