Electrical Machines
In induction motor wound rotor motor is mainly is used in application where

  high starting torque.
 power factor is less.
  less costly motor is not required.
  low starting torque.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC machine, for the same value of φ, Z and N; which one of the following statements is correct?

 Armature emf depends on weather the machine is running as a motor or generator.
 Armature emf is same as long as the flux density in the air gap remains the same.
 Armature emf is less with wave winding than with lap winding.
  Armature emf is more with wave winding than with lap winding.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The synchronous reactance( Xs) is the

 reactance due to armature reaction of the machine
 reactance due to leakage flux
 reactance either due to armature reaction or leakage flux
 combined reactance due to armature reaction and leakage flux

ANSWER DOWNLOAD EXAMIANS APP