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Engineering Thermodynamics

Engineering Thermodynamics
Which law states that the internal energy of a gas is a function of temperature?

Boyle's law
Joule's law
Charles' law
There is no such law

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Engineering Thermodynamics
The atomic mass of sulphur is

12
16
14
32

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Engineering Thermodynamics
Otto cycle consists of following four processes

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

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Engineering Thermodynamics
Entropy change depends on

Change of temperature
Mass transfer
Heat transfer
Thermodynamic state

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Engineering Thermodynamics
For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.

Less than
None of these
Equal to
Greater than

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Engineering Thermodynamics
The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

23.97 bar
26.03 bar
25 bar
34.81 bar

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