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Engineering Thermodynamics

Engineering Thermodynamics
A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as

Otto cycle
Stirling cycle
Carnot cycle
Diesel cycle

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Engineering Thermodynamics
The efficiency of Joule cycle is

Less than Carnot cycle
Equal to Carnot cycle
None of these
Greater than Carnot cycle

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Engineering Thermodynamics
The unit of pressure in S.I. units is

kg/cm²
mm of water column
Dyne per square cm
Pascal

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Engineering Thermodynamics
A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is

327°C
108°C
654°C
54°C

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Engineering Thermodynamics
The value of the product of molecular weight and the gas characteristic constant for all the gases in S.I. units is

735 J/kmol °K
83.14 J/kmol °K
29.27 J/kmol °K
848 J/kmol °K

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Engineering Thermodynamics
The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

rγ - 1
1 - rγ - 1
1 - (1/r) γ - 1/ γ
1 - (1/r) γ/γ - 1

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