# Mechanical Engineering - Thermodynamics

### Exercise :: Thermodynamics - Section 6

21.

The value of one bar (in S. I. units) is equal to

 A. 1 x 102 N/m2 B. 1 x 103 N/m2 C. 1 x 104 N/m2 D. 1 x 105 N/m2

Explanation:

No answer description available for this question. Let us discuss.

22.

Petrol is distilled at

 A. 65° to 220°C B. 220° to 345°C C. 345° to 470°C D. 470° to 550°C

Explanation:

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23.

If the carbon content in the bituminous coal is 78 to 81%, it is said to be coking bituminous coal.

 A. Agree B. Disagree

Explanation:

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24.

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

 A. B. C. D. Explanation:

No answer description available for this question. Let us discuss.

25.

The mass of excess air supplied is equal to

 A. x Mass of excess carbon B. x Mass of excess oxygen C. x Mass of excess carbon D. x Mass of excess oxygen