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Mr. Dubey • 52.30K Points
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Q. Which method is used in large modern thermal power plants to heat feed water?

(A) open type heatre is used
(B) close type heater is used
(C) steam is directly taken from main turbine and used to heat it feed water
(D) surface type heater is used
Correct : Option (C)

Explanation: 
 open and contact type haters are in small power plants. such heaters recives steam from back pressure turbine. in large modern power plants heaters bleed steam from the main turbine and use it for heating of feed water.

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