The pole shoes of a synchronous machine are so shaped that the air-gap is least in the middle and increases towards the pole edges. This type of construction

facilitates machining of pole shoes.

increases flux/pole for a given excitation

eliminates a particular harmonic

gives a nearly sinusoidal waveform of output voltage

The pole shoes of a synchronous machine are so shaped that the air-gap

1.	The pole shoes of a synchronous machine are so shaped that the air-gap is least in the middle and increases towards the pole edges. This type of construction
A.	increases flux/pole for a given excitation
B.	eliminates a particular harmonic
C.	gives a nearly sinusoidal waveform of output voltage
D.	facilitates machining of pole shoes.
Answer» D. facilitates machining of pole shoes.

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The pole shoes of a synchronous machine are so shaped that the air-gap is least in the middle and increases towards the pole edges. This type of construction

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