263) Which of the following is a water tube boiler

locomotive boiler

Cochran boiler

Cornish boiler

Babcock and Wilcox boiler

Answer is:

Babcock and Wilcox boiler

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264) The diameter of cylindrical shell of the Lancashire boiler is of the order of

1 tp 1.25m

1 to 1.75 m

2 to 4 m

1.75 to 2.75 m

Answer is:

1.75 to 2.75 m

265) A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are

supplied by same manufacturer loose and assembled at site

supplied mounted on a single base

purchased from several parties and packed together at site

packaged boiler does not exist

Answer is:

supplied mounted on a single base

266) The biggest size of thermal power unit operating in India is

30 MW

60 MW

100 MW

500 MW.

Answer is:

500 MW.

267) Which of the following coals has the highest calorific value

Anthracite coal

bituminous coal

lignite

peat

Answer is:

Anthracite coal

Explanation:

Anthracite, also known as hard coal, is a hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.

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