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Engineering Thermodynamics

Engineering Thermodynamics
The polytropic index (n) is given by

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

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Engineering Thermodynamics
The unit of universal gas constant is

None of these

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Engineering Thermodynamics
When gas is heated at constant pressure, the heat supplied is utilized in

None of these
Increasing the internal energy of gas
Increasing the internal energy of gas and also for doing some external work
Doing some external work

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

Isentropic expansion
Isothermal expansion
Isentropic compression
Isothermal compression

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Engineering Thermodynamics
Steam coal is a

Coking bituminous coal
Pulverized coal
Non-coking bituminous coal
Brown coal

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Engineering Thermodynamics
The absolute zero pressure can be attained at a temperature of

None of these
273 K
-273°C
0°C

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