State advantages and disadvantages of short pitch winding, distributed winding in alternator and derive an expression for distribution factor.

or

Explain the effect of distribution of winding & use of short pitch coil on the magnitude of generation voltage of an alternator & hence give expression for distribution factor &coil span factor.

or

Derive coil span factor, breath factor and induced emf equation of a Synchronous generator.

or

Derive EMF equation of alternator for full pitched and concentrated windings.

or

Explain a) distribution factor b) pitch factor in case of synchronous machine.