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Engineering Thermodynamics

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

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

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

Pulverized coal
Bituminous coal
Soft coal
Hard coal

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Engineering Thermodynamics
Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits?

O₂, N₂, H₂, air
O₂, N₂, steam, CO₂
O₂, N₂, water vapour
SO₂, NH₃, CO₂, moisture

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Engineering Thermodynamics
The increase in entropy of a system represents

Decrease in pressure
Degradation of energy
Increase in availability of energy
Increase in temperature

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Engineering Thermodynamics
The gas constant (R) is equal to the __________ of two specific heats.

Difference
Ratio
Sum
Product

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Engineering Thermodynamics
The efficiency of Diesel cycle increases with

None of these
Increase in cut-off
Constant cut-off
Decrease in cut-off

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