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Engineering Thermodynamics

Engineering Thermodynamics
Which law states that the specific heat of a gas remains constant at all temperatures and pressures?

Regnault's Law
Boyle's Law
Charles' Law
Joule's Law

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

2
4
8
16

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Engineering Thermodynamics
Which of the following items is not a path function?

Work
Kinetic energy
Thermal conductivity
Heat

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Engineering Thermodynamics
The efficiency of Joule cycle is

Equal to Carnot cycle
None of these
Less than Carnot cycle
Greater than Carnot cycle

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Engineering Thermodynamics
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

Expansion and compression are isentropic
Heat rejection is lower
Combustion is at constant volume
Maximum temperature is higher

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Engineering Thermodynamics
An adiabatic wall is one which

Encourages thermal interaction
Discourages thermal interaction
Permits thermal interaction
Prevents thermal interaction

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