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Engineering Thermodynamics

Engineering Thermodynamics
The value of gas constant (R) in S. I. units is

287 J/kgK
0.287 J/kgK
28.7 J/kgK
2.87 J/kgK

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Engineering Thermodynamics
A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

Reversible cycle
Thermodynamic cycle
None of these
Irreversible cycle

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Engineering Thermodynamics
In a steady flow process, the ratio of

Heat transfer is constant
Work transfer is constant
All of these
Mass flow at inlet and outlet is same

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Engineering Thermodynamics
The throttling process is __________ process.

Reversible or irreversible
Reversible
None of these
Irreversible

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Engineering Thermodynamics
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

None of the listed here
δQ = T.ds
δQ = T/ds
dQ = ds/T

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Engineering Thermodynamics
Which of the following gas has the highest calorific value?

Coal gas
Mond gas
Producer gas
Blast furnace gas

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