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Engineering Thermodynamics

Engineering Thermodynamics
The following cycle is used for air craft refrigeration

Joule cycle
Reversed Brayton cycle
Brayton cycle
Carnot cycle

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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
The efficiency of a Carnot engine depends on

Working substance
Temperatures of source and sink
Size of engine
Design of engine

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Engineering Thermodynamics
One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and ___ kg of water or steam.

9/7
7/4
11/7
11/4

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Engineering Thermodynamics
Boyle's law i.e. pV = constant is applicable to gases under

All ranges of pressures
Only small range of pressures
Steady change of pressures
High range of pressures

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Engineering Thermodynamics
The ratio of molar specific heats for mono-atomic gas is

1.4
1.87
1.67
1

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MORE MCQ ON Engineering Thermodynamics

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