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Engineering Thermodynamics

Engineering Thermodynamics
One molecule of oxygen consists of __________ atoms of oxygen.

2
8
4
16

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Engineering Thermodynamics
All perfect gases change in volume by 1/273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called

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

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Engineering Thermodynamics
The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.

Less than
Equal to
Greater than
None of these

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Engineering Thermodynamics
Diesel cycle consists of following four processes

Two isentropic and two constant volumes
Two isentropic and two constant pressures
Two isothermal and two isentropic
Two isentropic, one constant volume and one constant pressure

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Engineering Thermodynamics
The state of a substance whose evaporation from its liquid state is complete, is known as

Perfect gas
Vapour
Steam
Air

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Engineering Thermodynamics
According to kinetic theory of gases, the absolute zero temperature is attained when

Pressure of the gas is zero
Volume of the gas is zero
Specific heat of gas is zero
Kinetic energy of the molecules is zero

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