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Engineering Thermodynamics

Engineering Thermodynamics
Kerosene is distilled at

220° to 345°C
65° to 220°C
470° to 550°C
345° to 470°C

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Engineering Thermodynamics
The absolute zero temperature is taken as

237°C
-237°C
273°C
-273°C

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Engineering Thermodynamics
The general gas energy equation is (where Q1 - 2 = Heat supplied, dU = Change in internal energy, and W1 - 2 = Work done in heat units)

Q1 - 2 = dU - W1 - 2
Q1 - 2 = dU + W1 - 2
Q1 - 2 = dU × W1 - 2
Q1 - 2 = dU/W1 - 2

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Engineering Thermodynamics
A process, in which the temperature of the working substance remains constant during its expansion or compression, is called

Adiabatic process
Isothermal process
Hyperbolic process
Polytropic process

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

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

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Engineering Thermodynamics
The entropy of water at 0°C is assumed to be

2
-1
1

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MORE MCQ ON Engineering Thermodynamics

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