alleryIn a thermal power plant, what is the function of the condenser?
ATo burn the coal more completely
BTo rotate the turbine blades faster
CTo increase the steam pressure
DTo convert used steam back into water
Answer & Solution
Correct answer: D. To convert used steam back into water
1. After the steam rotates the turbine, its temperature and pressure drop.
2. In the condenser, heat is taken out of this steam using cooling-tower water.
3. As heat is removed, the steam condenses back into water for re-circulation to the boiler.
4. Increasing pressure (option C) is done in the boiler, not the condenser, ruling it out.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 5 "Towards Green Energy", p.58_
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