Electrical Machines
Regenerative braking is possible in

 DC compound motor.
  DC shunt motor with field weakening control.
 DC shunt motor with armature resistance control.
 DC series motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The synchronous reactance( Xs) is the

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

ANSWER DOWNLOAD EXAMIANS APP