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Engineering Thermodynamics

Engineering Thermodynamics
The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

rγ - 1
1 - (1/r) γ - 1/ γ
1 - rγ - 1
1 - (1/r) γ/γ - 1

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Engineering Thermodynamics
The condition of perfect vacuum, i.e., absolute zero pressure can be attained at

A temperature of 0°C
A negative pressure and 0°C temperature
A temperature of 273 °K
A temperature of - 273.16°C

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Engineering Thermodynamics
A process of heating crude oil to a high temperature under a very high pressure to increase the yield of lighter distillates, is known as

Cracking
Carbonization
Fractional distillation
Full distillation

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

Volume
Enthalpy
Temperature
Pressure

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Engineering Thermodynamics
The following cycle is used for air craft refrigeration

Brayton cycle
Joule cycle
Carnot cycle
Reversed Brayton cycle

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Engineering Thermodynamics
The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as

Rankine cycle
Atkinson cycle
Dual combustion cycle
Diesel cycle

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MORE MCQ ON Engineering Thermodynamics

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