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Engineering Thermodynamics

Engineering Thermodynamics
The polytropic index (n) is given by

log (p2/ p1)/log (v1/ v2)
log (v1/ v2)/ log (p1/p2)
log [(p1v1)/(p2v2)]
log (p1p2)/log (v1v2)

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Engineering Thermodynamics
The general law of expansion or compression is pvn = C, The process is said to be hyperbolic, if n is equal to

∝
1
γ

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Engineering Thermodynamics
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called

Isothermal process
Polytropic process
Hyperbolic process
Adiabatic process

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Engineering Thermodynamics
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.

Carbonization
Combustion
Atomization
None of these

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Engineering Thermodynamics
During which of the following process does heat rejection takes place in Carnot cycle?

Isentropic compression
Isentropic expansion
Isothermal expansion
Isothermal compression

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Engineering Thermodynamics
Water contained in a beaker can be made to boil by passing steam through it

Any pressure
At a pressure greater than atmospheric pressure
Not possible
At atmospheric pressure

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