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Engineering Thermodynamics

Engineering Thermodynamics
For which of the following substances, the gas laws can be used with minimum error

Superheated steam
Wet steam
Saturated steam
Dry steam

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Engineering Thermodynamics
According to which law, all perfect gases change in volume by 1/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant

Boyle's law
Charles' law
Gay Lussac’s law
Joule's law

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Engineering Thermodynamics
For the same compression ratio, the efficiency of dual combustion cycle is

Greater than Diesel cycle and less than Otto cycle
Less than Diesel cycle and greater than Otto cycle
Greater than Diesel cycle
Less than Diesel 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
Kinetic energy of the molecules in terms of absolute temperature (T) is proportional to

J²
T
Vr
J

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Engineering Thermodynamics
The temperature at which the volume of a gas becomes zero is called

Absolute zero temperature
None of these
Absolute scale of temperature
Absolute temperature

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MORE MCQ ON Engineering Thermodynamics

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