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Mechanical Engineering Objective Questions { Power Plant Engineering }

71. A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are
A.Supplied by same manufacturer loose and assembled at site
B.Supplied mounted on a single- base
C.Purchased from several parties and packed together at site
D.Packaged boiler does not exist

72. The biggest size of thermal power unit operating in India is
A.30 MW
B.500 MW.
C.100 MW
D.210 MW

73. Which of the following coals has the highest calorific value
A.Anthracite coal
B.Bituminous coal

74. The high pressure boiler is ohe producing steam at a pressure more than
A.Atmospheric pressure
B.75-80 kg/cm2.
C.10 kg/cm2
D.40 kg/cm2

75. The crown of the fire box is made hemispherical in order to
A.Give maximum space
B.Give maximum strength
C.Withstand pressure inside boiler
D.Resist intense heat in fire box

76. Which of the following is steam &el
A.Non-coking bituminous coal
B.Brown coal
C.Pulverised coal
D.Coking bituminous coal

77. The fire tubes in a Cothran and Scotish marine boiler are
D.Both horizontal and vertical

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