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Engineering Thermodynamics

Engineering Thermodynamics
In closed cycle gas turbine, the air is compressed

Isothermally
Polytropically
None of these
Isentropically

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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
None of these
Does some external work during expansion
Both (A) and (B)

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Engineering Thermodynamics
For reversible adiabatic process, change in entropy is

Negative
Minimum
Zero
Maximum

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Engineering Thermodynamics
Which of the following process can be made reversible with the help of a regenerator?

Constant pressure process
All of these
Constant volume process
Constant pvn process

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Engineering Thermodynamics
One kg of carbon monoxide requires 4/7 kg of oxygen and produces

8/3 kg of carbon monoxide gas
7/3 kg of carbon monoxide gas
11/7 kg of carbon dioxide gas
11/3 kg of carbon dioxide gas

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Engineering Thermodynamics
The efficiency of a Carnot engine depends on

Size of engine
Working substance
Design of engine
Temperatures of source and sink

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