Steam Boilers - Interview Questions | Exam2Win

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21. A fusible plug is fitted in small boilers in order to

A. avoid excessive build up of pressure

B. avoid explosion

C. extinguish fire if water level in the boiler falls below alarming limit

D. control steam dome

E. remove molten ASL.

Explanation:

22. Boiler stays are used to

A. prevent flat surfaces under pressure from tearing apart

B. take care of failure in shear

C. take care of failure in compression

D. provide support for boiler

E. provide foundation of boiler.

Explanation:

23. In which of the following boilers, the draught in furnace is increased by utilizing exhaust steam from engine

A. lancashire boiler

B. locomotive boiler

C. babcock and wilcox boiler

D. cochran boiler

E. benson boiler.

Explanation:

24. One kg of steam sample contains 0.8 kg dry steam; it's dryness fraction is

A. 0.2

B. 0.8

C. 1.0

D. 0.6

E. 0.5.

Explanation:

25. The radius of a dished head is taken approximately as

A. one-fourth

B. half

C. one

D. two

E. three.

Explanation: