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Question

Compounding of steam turbine is done to

A.

Balance the rotor

B.

Reduce the blade friction

C.

Reduce the rotor speed

D.

Connect the shaft of one turbine to that of another

Answer ( Option C)

Reduce the rotor speed

Solution

Compounding of steam turbine is used to reduce the rotor speed. It is the process by which rotor speed come to its desired value. A multiple system of rotors are connected in series keyed to a common shaft and the steam pressure or velocity is absorbed in stages as it flows over the blades.

Hence, the correct option is (C).

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