Mechanical Engineering - Thermodynamics

11. 

The lower calorific value of fuel may be obtained by adding the heat of steam formed during combustion to the higher calorific value.

A. Yes
B. No

Answer: Option B

Explanation:

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12. 

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

A. 11/3 kg of carbon dioxide gas
B. 7/3 kg of carbon monoxide gas
C. 11/7 kg of carbon dioxide gas
D. 8/3 kg of carbon monoxide gas

Answer: Option C

Explanation:

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13. 

The molecular mass expresssed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of

A. 0.224 litres
B. 2.24 litres
C. 22.4 litres
D. 224 litres

Answer: Option C

Explanation:

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14. 

The absolute zero pressure will be

A. when molecular momentum of the system becomes zero
B. at sea level
C. at the temperature of - 273 K
D. at the centre of the earth

Answer: Option A

Explanation:

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15. 

The gas in cooling chamber of a closed cycle gas turbine is cooled at

A. constant volume
B. constant temperature
C. constant pressure
D. none of these

Answer: Option C

Explanation:

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