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

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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.

268) The high pressure boiler is oiie producing steam at a pressure more than

atmospheric pressure

75-80 kg/cm2

10 kg/cm2

40 kg/cm2

Answer is:

75-80 kg/cm2

269) The crown of the fire box is made hemispherical in order to

give maximum space

give maximum strength

withstand pressure inside boiler ,

resist intense heat in fire box

Answer is:

resist intense heat in fire box

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