LOADING
Question

A synchronous phase modifier as compared to a synchronous motor used for mechanical loadhave :

A.

Larger shaft and higher speed. 

B.

Smaller shaft and higher speed

C.

Larger shaft and smaller speed.

D.

Smaller shaft and smaller speed. 

Answer ( Option B)

Smaller shaft and higher speed

Solution

●A synchronous phase modifier is a type of synchronous motor that runs without mechanical load, and is provided with means for varying its power factor to simulate an inductive or capacitive reactor which is used in voltage regulation of alternating current power system.

●Due to no load, the motor can be operated at highest possible speed, hence designed for higher speed having smaller shaft.

Hence, the correct option is (B).

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