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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
Diesel cycle
Carnot cycle

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Engineering Thermodynamics
When cut-off ratio is ________; the efficiency of Diesel cycle approaches to Otto cycle efficiency

43834
2
Zero
43835

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Engineering Thermodynamics
The increase in entropy of a system represents

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

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Engineering Thermodynamics
For the same compression ratio, the efficiency of dual combustion cycle is

Less than Diesel cycle and greater than Otto cycle
Greater than Diesel cycle and less than Otto cycle
Greater than Diesel cycle
Less than Diesel cycle

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Engineering Thermodynamics
A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

30 kJ
114 kJ
54 kJ
84 kJ

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

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

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MORE MCQ ON Engineering Thermodynamics

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