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Engineering Thermodynamics

Engineering Thermodynamics
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

1 - (T1/T2)
(T1/T2) - 1
1 + (T2/T1)
1 - (T2/T1)

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Engineering Thermodynamics
For reversible adiabatic process, change in entropy is

Negative
Zero
Minimum
Maximum

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Engineering Thermodynamics
One kg of carbon requires 4/3 kg of oxygen and produces ________ kg of carbon monoxide gas.

44015
44142
44138
44046

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Engineering Thermodynamics
In a free expansion process

Both (A) and (B) above
Work done is zero but heat increases
Heat transfer is zero
Work done is zero

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Engineering Thermodynamics
The ___ is obtained when carbonization of coal is carried out at 500° to 700° C.

Pulverized coal
Bituminous coal
Soft coal
Hard coal

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Engineering Thermodynamics
One kg of carbon monoxide requires 4/7 kg of oxygen and produces

8/3 kg of carbon monoxide gas
11/3 kg of carbon dioxide gas
7/3 kg of carbon monoxide gas
11/7 kg of carbon dioxide gas

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