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Engineering Thermodynamics

Engineering Thermodynamics
The gas constant (R) is equal to the __________ of two specific heats.

Sum
Ratio
Product
Difference

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Engineering Thermodynamics
Which of the following cycles is not a reversible cycle?

Carnot
None of the listed here
Ericsson
Stirling

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Engineering Thermodynamics
The efficiency of Ericsson cycle is __________ Carnot cycle.

Equal to
Greater than
None of these
Less than

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

Zero
43835
2
43834

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Engineering Thermodynamics
Brayton cycle consists' of following four processes

Two isentropic and two constant volumes
Two isentropic and two constant pressures
Two isentropic, one constant volume and one constant pressure
Two isothermal and two isentropic

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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

114 kJ
30 kJ
54 kJ
84 kJ

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