DC Motors
Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be

Under compounded
Level compounded
Differentially compounded
Cumulatively compounded

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DC Motors
In variable speed motor

A weaker commutating field is needed at low speed than at high speed
Same commutating field is needed at low speed than at high speed
A stronger commutating field is needed at low speed than at high speed
None of these

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