# Q.Short circuiting in the armature winding  is caused due to

• AFailure of insulation between two turns of a coil
• BFailure of insulation between two commutator bars
• CGrounding of two or more turns of the same coil
• DAny of the above
Correct Answer : (D)

Any of the above

Hints :

Short circuiting in the armature winding  is caused due to Failure of insulation between two turns of a coil, Failure of insulation between two commutator bars and Grounding of two or more turns of the same coil.

Torque developed in an electromechanical energy conversion device depends upon

In electromechanical energy conversion devices (e.g generators and motors) a small air gap is left between the stator and the rotor in order to