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ELECTRICAL MACHINES

Electrical Machines
Exciting current of an induction motor is

  lesser than power transformer.
  none of these.
  equal as power transformer.
  higher than power transformer.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is

 0.6.
  1.
 0.4.
 0.8.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In travelling cranes for hoisting and lowering which type of motor is preferred?

  AC slip ring motor.
  Synchronous motor.
  Single phase induction motor.
  DC series motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In travelling cranes for crane travel, trolley and boom hoist which motor is preferred?

  DC differential compound motor.
  Slip ring induction motor.
  Stepper motor.
  Synchronous motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In travelling cranes for swing action which motor is preferred?

  DC series motor.
  AC slip ring IM.
  Reluctance motor.
  Capacitor type induction motors.

ANSWER DOWNLOAD EXAMIANS APP
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