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

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

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Skewing of the rotor in a 3 - Φ squirrel cage induction motor reduces

  noise and parasitic torque, but increase starting and pull-out torque.
  noise, parasitic torque, starting torque and pull out torque.
  noise, parasitic and starting torque, but increase pull out torque.
  noise and pullout torque, but increase parasitic and starting torque.

ANSWER DOWNLOAD EXAMIANS APP