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171. The fire tubes in, a Coarran and Scotish marine boiler are

A. horizontal

B. vertical

C. inclined

D. both horizontal and vertical

E. horizontal and inclined.

Explanation:

172. In accelerated circulation type boiler

A. heating takes place at bottom and the water supplied at bottom gets converted into the mixture of stdam bub bles and hot water which rise to durm

B. water is supplied in drum and through down comers" located in atmospheric condition it passes to the water wall and rises to drum in the from of mixture of water and steam

C. feed pump is employed to supplement natural circulation in water wall type furnace

D. water is converted into steam in one pass without any recirculation

E. water is fed under high pressure and high velocity.

Explanation:

173. The basic purpose of drum in boiler is to

A. serve as storage of steam

B. serve as storage of feed water for water wall

C. remove salts from water

D. separate steam from water

E. control level.

Explanation:

174. Which of the following is steam dbal

A. non-coking bituminous coal

B. brown coal

C. pulverised coal

D. coking bituminous coal

E. none of the above.

Explanation:

175. Which of the following boilers is best suited to meet fluctuating demands

A. babcock and wilcox

B. locomotive

C. lancashire

D. cochran

E. comish.

Explanation:

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