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Engineering Thermodynamics

Engineering Thermodynamics
If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant

Volume
Pressure
Enthalpy
Temperature

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Engineering Thermodynamics
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

Dual cycle, Otto cycle, Diesel cycle
Diesel cycle, Otto cycle, Dual cycle
Dual cycle, Diesel cycle, Otto cycle
Otto cycle, Diesel cycle, Dual cycle

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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

108°C
54°C
654°C
327°C

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Engineering Thermodynamics
First law of thermodynamics deals with

Conservation of momentum
Conservation of energy
Conservation of heat
Conservation of mass

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Engineering Thermodynamics
Which of the following cycles has maximum efficiency?

Stirling
Brayton
Carnot
Rankine

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Engineering Thermodynamics
Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits?

O₂, N₂, H₂, air
O₂, N₂, water vapour
SO₂, NH₃, CO₂, moisture
O₂, N₂, steam, CO₂

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