SSC JE EE Quiz: Electrical Machine Booster Quiz-20

In a DC machine the torque is proportional to

The function of a starter in a D.C motor is

Calculate the step angle for 6-stack, 12-tooth variable reluctance motor.

The no-load current of a transformer is 10A, at a power factor of 0.30 lagging, when connected to 230V, 50 Hz supply.

Calculate the magnetizing component of no-load current

When load on synchronous motor increased then?

(1) Torque angle increased

(2) Armature current reduced

(3) Armature current increased

(4) Phase angle increases in the lagging direction

Choose the correct one

If span of coil reduced by 30° then coil span will be?

Scharge motor is basically a?

Slip of the  induction motor with respect to backward field is given by?

A slip of a  induction motor is given by 0.04 and developed mechanical power is 1000 watt. Find rotor cu loss.

Rotor conductors are short circuited by end ring in?