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Engineering Thermodynamics

Engineering Thermodynamics
The efficiency of Joule cycle is

Greater than Carnot cycle
None of these
Less than Carnot cycle
Equal to Carnot cycle

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Engineering Thermodynamics
Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant

Pressure
Volume
Temperature
Internal energy

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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

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

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Engineering Thermodynamics
The behavior of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

Gay-Lussac law
Charles' law
All of the listed here
Boyle's law

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Engineering Thermodynamics
If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to

-ve
Anywhere between zero and infinity
+ve
Zero

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Engineering Thermodynamics
The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will

Increase
Decrease
Increase/decrease depending on application
Remain unchanged

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MORE MCQ ON Engineering Thermodynamics

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