Electrical Machines
In most condition which frame of motor will be preferred?

  Totally enclosed fan coiled.
 Drip proof.
 Splash proof.
 Open type.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The synchronous motor can be started by

  coupling it with a small AC induction motor called the pony motor.
  coupling it with a DC compound motor.
  any of the above methods.
  providing damper winding in its rotor circuit.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Consider the following statements regarding the speed control of dc motors : 1. ward-leonard method is suitable forconstant-torque drives 2. Ward-leonard method is suitable for constant-power drives 3. field-control method facilitates speed control below base speed 4. Armature-resistance control method is more efficient than ward-leanard method 5. Field-control method is suitable for constant-torque drives 6. Armature-resistance control method is suitable for constant-torque drives From these, the correct answer is

 1, 3, 5
 1, 2, 6
 1, 4, 6
 1, 2, 5

ANSWER DOWNLOAD EXAMIANS APP