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Engineering Thermodynamics

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

Sum
Product
Ratio
Difference

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Engineering Thermodynamics
Temperature of a gas is produced due to

Kinetic energy of molecules
Repulsion of molecules
Its heating value
Surface tension of molecules

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Engineering Thermodynamics
For the same compression ratio, the efficiency of dual combustion cycle is

Less than Diesel cycle and greater than Otto cycle
Greater than Diesel cycle
Greater than Diesel cycle and less than Otto cycle
Less than Diesel cycle

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

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

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Engineering Thermodynamics
The fuel mostly used in steam boilers is

Coking bituminous coal
Non-coking bituminous coal
Peat
Brown coal

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Engineering Thermodynamics
The efficiency of Diesel cycle with decrease in cut-off

First decreases and then increases
Increases
First increases and then decreases
Decreases

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MORE MCQ ON Engineering Thermodynamics

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