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Engineering Thermodynamics

Engineering Thermodynamics
Minimum work in compressor is possible when the value of adiabatic index ‘n’ is equal to

1.27
0.75
1.35
1

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Engineering Thermodynamics
The unit of mass in S.I. units is

Quintal
Kilogram
Tonne
Gram

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Engineering Thermodynamics
For a perfect gas, according to Boyle’s law (where P = Absolute pressure, V = Volume and T = Absolute temperature)

P v = constant, if T is kept constant
P/T = constant, if v is kept constant
V/T = constant, if p is kept constant
T/P = constant, if v is kept constant

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Engineering Thermodynamics
When a gas is heated at constant pressure

Its temperature will increase
Both temperature and volume will increase
Neither temperature not volume will increase
Its volume will increase

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Engineering Thermodynamics
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is

-80 kJ
-40 kJ
+60 kJ
-140 kJ

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Engineering Thermodynamics
The unit of universal gas constant is

None of these

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