Mechanical Engineering - Steam Boilers and Engines

11. 

The natural draught is produced by

A. steam jet
B. centrifugal fan
C. chimney
D. both (a) and (b)

Answer: Option C

Explanation:

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

12. 

Willian's line for the steam engine is a straight line relationship between the steam consumption per hour and

A. indicated power
B. brake power
C. efficiency
D. pressure of steam

Answer: Option A

Explanation:

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

13. 

The temperature of condensate is __________ on leaving the condenser than that of circulating water at inlet.

A. higher
B. lower

Answer: Option A

Explanation:

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

14. 

A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it, is called natural draught.

A. Yes
B. No

Answer: Option A

Explanation:

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

15. 

Which of the following statement is correct ?

A. A fire tube boiler occupies less space than a water tube boiler, for a given power.
B. Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.
C. A simple vertical boiler has one fire tube.
D. all of the above

Answer: Option C

Explanation:

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