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Engineering Thermodynamics

Engineering Thermodynamics
The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)

Ru × T
3 Ru × T
2 Ru × T
1.5 Ru × T

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Engineering Thermodynamics
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

δQ = T/ds
dQ = ds/T
δQ = T.ds
None of the listed here

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Engineering Thermodynamics
Absolute zero pressure will occur

Under vacuum conditions
At a temperature of 273°K
At sea level
When molecular momentum of the system becomes zero

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Engineering Thermodynamics
A molecule consisting of one atom is known as

Mono-atomic
Poly-atomic
Di-atomic
Tri-atomic

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Engineering Thermodynamics
The absolute zero pressure will be

At the temperature of - 273 K
When molecular momentum of the system becomes zero
At sea level
At the center of the earth

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Engineering Thermodynamics
The efficiency of a Carnot engine depends on

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

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MORE MCQ ON Engineering Thermodynamics

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