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The coal is fed to the furnace through _________

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The coal is fed to the furnace through _________

(a) conveyor belt

(b) wagon tipper

(c) hopper

(d) crane

I had been asked this question in an internship interview.

I want to ask this question from Cool and Ash Handling System in section Steam Power Plant of Energy Engineering

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Correct choice is (c) hopper

The explanation is: Hopper is the conical shaped slow coal dispenser to the furnace. It is placed right above the furnace and a live feeder mechanism is set at end of hopper for a controlled flow.  There is no requirement of any external power/force since this works on gravity force.

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