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Engineering Thermodynamics

Engineering Thermodynamics
The heat and mechanical energies are mutually convertible. This statement was established by

None of these
Charles
Joule
Boyle

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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

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

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Engineering Thermodynamics
In a no flow reversible process for which p = (-3V + 15) × 105 N/m², V changes from 1 m3 to 2 m3. The work done will be about

100 × 10⁵ joules
1 × 10⁵ joules
10 × 10⁵ joules
10 × 10⁵ kilo joules

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Engineering Thermodynamics
One molecule of oxygen is __________ times heavier than the hydrogen atom.

12
16
14
32

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Engineering Thermodynamics
Which of the following is the lightest and most volatile liquid fuel?

Fuel oil
Kerosene
None of these
Gasoline

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Engineering Thermodynamics
Mixture of ice and water form a

Closed system
Isolated system
Heterogeneous system
Open system

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