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Engineering Thermodynamics

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

Equal to
Greater than
Less than
None of these

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Engineering Thermodynamics
The atomic mass of nitrogen is __________ oxygen.

Equal to
None of these
Less than
More than

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Engineering Thermodynamics
Reversed joule cycle is called

Carnot cycle
Bell Coleman cycle
Brayton cycle
Rankine cycle

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Engineering Thermodynamics
The general gas energy equation is (where Q1 - 2 = Heat supplied, dU = Change in internal energy, and W1 - 2 = Work done in heat units)

Q1 - 2 = dU - W1 - 2
Q1 - 2 = dU × W1 - 2
Q1 - 2 = dU/W1 - 2
Q1 - 2 = dU + W1 - 2

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Engineering Thermodynamics
The work ratio of simple gas turbine cycle depends upon

Minimum cycle temperature
All of these
Maximum cycle temperature
Pressure ratio

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Engineering Thermodynamics
The efficiency of the Carnot cycle may be increased by

Increasing the highest temperature
Keeping the lowest temperature constant
Increasing the lowest temperature
Decreasing the highest temperature

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