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Question 3 What are methods for improving the efficiency of steam power plant? Use of high pressure O Reheating of steam Use
estion 4 High head in hydro-electric plants requires the use of Kaplan turbines Francis turbines Pelton turbines O all of the
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Answer #1

Question 3.

Answer : All of the mentioned

--> Use of high pressure avoids the steam leakage and increase the efficiency. Reheating of steam gives additional work output. Use of high grade coal also improve the efficiency of steam power plant. So all those three methods can improve the efficiency.

Question 4.

Answer : Pelton turbines.

--->  Pelton Turbine is preferred for hydro electric plants, when water source has a relatively high hydraulic head and  used to drive generator of turbine and that generator generates mechanical energy of the turbine into electrical energy. So Pelton turbines are required for high heads in hydro electric Power plant.

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