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Power Plant Engineering - Interview Questions and Answers

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71. In ______ system fuel from a central pulverizing unit is delivered to a bunker and then to the various burners
A. unit
B. central
C. none of the above
D. central
Explanation:
72. Economisers improve boiler efficiency by
A. 1 to 5%
B. 4 to 10%
C. 10 to 12%
D. 4 to 10%
Explanation:
73. Method which is commonly applied for unloading the coal for small power plant is
A. lift trucks
B. coal accelerators
C. tower cranes
D. belt conveyor
Explanation:
74. Primary air is that air which is used to
A. reduce the flame length
B. increase the flame length
C. transport and dry the coal
D. provide air around burners for get�ting optimum combustion
Explanation:
75. Deaerative heating is done to
A. heat the water
B. heat the air in the water
C. remove dissolved gases in the water
D. remove dissolved gases in the water
Explanation:
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