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Engineering Thermodynamics

Engineering Thermodynamics
If a certain amount of dry ice is mixed with same amount of water at 80°C, the final temperature of mixture will be

20°C
40°C
0°C
80°C

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Engineering Thermodynamics
Diesel cycle consists of __________ processes.

Two constant volume and two isothermal
One constant pressure, one constant volume and two isentropic
Two constant pressure and two isentropic
Two constant volume and two isentropic

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Engineering Thermodynamics
A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is

54°C
108°C
327°C
654°C

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Engineering Thermodynamics
The absolute zero pressure will be

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

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Engineering Thermodynamics
In a free expansion process

Both (A) and (B) above
Heat transfer is zero
Work done is zero
Work done is zero but heat increases

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Engineering Thermodynamics
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called

Polytropic process
Hyperbolic process
Isothermal process
Adiabatic process

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