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Engineering Thermodynamics

Engineering Thermodynamics
Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant

Internal energy
Temperature
Volume
Pressure

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Engineering Thermodynamics
The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when

Process is isentropic and specific heat does not change with temperature
Process is isentropic
Flow is uniform and steady
Process is isothermal

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Engineering Thermodynamics
An open cycle gas turbine works on

Stirling cycle
Otto cycle
Carnot cycle
Joule's cycle

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Engineering Thermodynamics
Work done in a free expansion process is

Zero
Positive
Maximum
Minimum

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Engineering Thermodynamics
The value of one bar (in S. I. units) is equal to

1 × 104 N/m2
1 × 103 N/m2
1 × 105 N/m2
1 × 102 N/m2

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Engineering Thermodynamics
According to Gay Lussac’s law for a perfect gas, the absolute pressure of given mass varies directly as

Absolute temperature, if volume is kept constant
Volume, if temperature is kept constant
None of these
Temperature

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