Mechanical Engineering - Steam Boilers and Engines

16. 

Which of the following is a water tube boiler ?

A. Lancashire boiler
B. Babcock and Wilcox boiler
C. Locomotive boiler
D. Cochran boiler

Answer: Option B

Explanation:

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17. 

The number of fire tubes in a Cochran boiler are

A. 75
B. 115
C. 165
D. 225

Answer: Option C

Explanation:

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18. 

The actual power supplied by the engine crankshaft is called

A. indicated power
B. brake power
C. frictional power
D. none of these

Answer: Option B

Explanation:

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19. 

The draught produced by a steam jet issuing from a nozzle placed in the chimney is called

A. induced steam jet draught
B. chimney draught
C. forced steam jet draught
D. none of these

Answer: Option A

Explanation:

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20. 

The chimney draught varies with

A. climatic conditions
B. temperature of furnace gases
C. height of chimney
D. all of these

Answer: Option D

Explanation:

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