GATE ME 2014 Set 3 — Question 25

MCQ+1 / -0.33EasyGas Turbine CyclesSteam & Gas TurbinesTurbomachinery

Turbomachinery → Steam & Gas Turbines → Gas Turbine Cycles

Last updated 5 September 2026

Question

For a gas turbine power plant, identify the correct pair of statements. P. Smaller in size compared to steam power plant for same power output Q. Starts quickly compared to steam power plant R. Works on the principle of Rankine cycle S. Good compatibility with solid fuel

Correct answer (A) P, Q Solution Gas turbine power plants have several characteristics compared to steam power plants: P. Smaller in size: They have a much higher power-to-weight ratio, making them more compact for the same power output. Q. Starts quickly: They can be started and brought to full load in a matter of minutes, whereas steam plants take hours. R. Principle: Gas turbines work on the Brayton cycle, not the Rankine cycle (which is for steam plants). S. Fuel compatibility: Gas turbines typically require clean gaseous or liquid fuels; they are not directly compatible with solid fuels like coal without gasification. Therefore, the correct pair is P and Q. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (A) P, Q Solution Gas turbine power plants have several characteristics compared to steam power plants: P. Smaller in size: They have a much higher power-to-weight ratio, making them more compact for the same power output. Q. Starts quickly: They can be started and brought to full load in a matter of minutes, whereas steam plants take hours. R. Principle: Gas turbines work on the Brayton cycle, not the Rankine cycle (which is for steam plants). S. Fuel compatibility: Gas turbines typically require clean gaseous or liquid fuels; they are not directly compatible with solid fuels like coal without gasification. Therefore, the correct pair is P and Q.

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