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Engineering Thermodynamics

Engineering Thermodynamics
The ___ is obtained when carbonization of coal is carried out at 500° to 700° C.

Soft coal
Hard coal
Pulverized coal
Bituminous coal

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

-273°C
None of these
273 K
0°C

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Engineering Thermodynamics
The sum of internal energy (U) and the product of pressure and volume (p.v) is known as

Power
Work done
Entropy
Enthalpy

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Engineering Thermodynamics
Superheated vapour behaves

Approximately as a gas
As steam
Exactly as gas
As ordinary vapour

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Engineering Thermodynamics
The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.

Greater than
Less than
Equal to
None of these

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Engineering Thermodynamics
The efficiency of Carnot cycle is maximum for

Steam engine
Gas engine
Petrol engine
Reversible engine

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