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Engineering Thermodynamics

Engineering Thermodynamics
For reversible adiabatic process, change in entropy is

Negative
Zero
Minimum
Maximum

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Engineering Thermodynamics
Work done in an adiabatic process between a given pair of end states depends on

The value of heat transferred
The value of index ‘n’
Particular adiabatic process
The end states only

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Engineering Thermodynamics
The entropy __________ in an irreversible cyclic process.

None of these
Decreases
Increases
Remains constant

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Engineering Thermodynamics
The amount of heat generated per kg of fuel is known as

Calorific value
Lower calorific value
Heat energy
Higher calorific value

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Engineering Thermodynamics
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

Combustion is at constant volume
Expansion and compression are isentropic
Maximum temperature is higher
Heat rejection is lower

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Engineering Thermodynamics
The compression ratio is the ratio of

Swept volume to total volume
Total volume to swept volume
Total volume to clearance volume
Swept volume to clearance volume

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MORE MCQ ON Engineering Thermodynamics

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