DC Generators
The main drawback of a dc shunt generator is that

Shunt field circuit has high resistance
It is expensive
Terminal voltage drops considerably
Generated voltage is small

ANSWER DOWNLOAD EXAMIANS APP

DC Generators
Lap winding is composed of

That even number which is exact multiple of poles
That even number which is exact multiple of poles + 2
Any odd number of conductors
Any even number of conductors

ANSWER DOWNLOAD EXAMIANS APP