Electrical Machines
In applied voltage is reduced in a dc shunt motor

 Full load speed.
 Full load torque.
 None of these.
  Full load current.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Cogging in induction motor occurs when

 number of stator teeth - number of rotor teeth = odd number.
 number of stator teeth - number of rotor teeth = negative number.
 number of stator teeth - number of rotor teeth = 0.
 number of stator teeth - number of rotor teeth = even number.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
With the increase in speed of a DC motor

 both back emf as well as line current increase.
 back emf increases but line current falls.
 back emf falls and line current increases.
 both back emf as well as line current fall.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Cogging of induction motor occurs at

 low voltage and when stator and rotor poles are not equal.
 low voltage and when stator and rotor poles are equal.
 high voltage and when stator and rotor poles are not equal.
 high voltage and when stator and rotor poles are equal.

ANSWER DOWNLOAD EXAMIANS APP