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Engineering Thermodynamics

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.

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

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Engineering Thermodynamics
Which of the following quantities is not the property of the system?

Pressure
Heat
Temperature
Specific volume

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Engineering Thermodynamics
A diathermic wall is one which

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

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Engineering Thermodynamics
On weight basis, air contains following parts of oxygen

25
73
23
21

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Engineering Thermodynamics
Stirling and Ericsson cycles are

Quasi-static cycles
Semi-reversible cycles
Reversible cycles
Irreversible cycles

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Engineering Thermodynamics
Otto cycle consists of following four processes

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

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