This question was asked inGPSC AE (Electrical) Class-2 R&B Department Paper 2025 – Series MQuestion 122 of 179 published · Gujarat Public Service CommissionOpen paper
Q242EasyPower Generation

What is the purpose of a condenser in a steam power plant?

Answer & step-by-step solution
Correct answer: A. To convert steam back into water
Quick explanation

The condenser removes latent heat from turbine exhaust steam and converts it back into water (condensate), while maintaining a low exhaust pressure that improves turbine work output.

Steam → condenser heat rejection → liquid condensate

Concept & Reasoning

Condensing exhaust steam closes the Rankine water-steam cycle so condensate can be pumped back to the boiler. A good condenser also creates vacuum/low back pressure at the turbine exhaust and facilitates recovery of high-quality feedwater.

How to Solve It in the Exam

Condenser: steam back to water + low turbine back pressure.

Important Exam Point

Cooling water removes heat from steam; it does not mix with condensate in a surface condenser.

Quick Trick

Condenser: steam back to water + low turbine back pressure.

Common Mistake

Confusing condenser with cooling tower—the cooling tower cools circulating cooling water.

Solution diagram – What is the purpose of a condenser in a steam power plant?
Exam tipCooling water removes heat from steam; it does not mix with condensate in a surface condenser.
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