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Engineering Thermodynamics

Engineering Thermodynamics
Carnot cycle has maximum efficiency for

Reversible engine
Petrol engine
Diesel engine
Irreversible engine

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

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

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Engineering Thermodynamics
The compression ratio for Diesel engines is

5 to 8
3 to 6
15 to 20
20 to 30

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Engineering Thermodynamics
When the gas is heated at constant volume, the heat supplied

None of these
Does some external work during expansion
Increases the internal energy of the gas and increases the temperature of the gas
Both (A) and (B)

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Engineering Thermodynamics
A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is

Not possible
Theoretically possible
May be possible with lot of sophistications
Cost will be very high

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Engineering Thermodynamics
According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.

Third kind
First kind
Second kind
None of these

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