THREE PHASE INDUCTION MOTORS QUIZ

None

One

Three

Two

Frequency

Square of supply voltage

Rotor inductive reactance

All of the listed here

Stator slots are equal to rotor slots

Stator slots are not exact multiple of rotor slots

None of the listed here

Stator slots are exact multiple of rotor slots

Shaft diameter

Rotor power factor

Rotor current

Rotor emf

Its power factor goes on decreasing

Its power factor remains constant

Its power factor goes on increasing even after full load

Its power factor goes on increasing up to full load and then it falls again

Large slip

Low resistance

High reactance

high resistance

Line voltage

Running torque

Rotor current

Slip

None of the listed here

Increased under running conditions

Decreased at starting

Increased at starting

K × torque with direct switching

k2/torque with direct switching

k/torque with direct switching

K2 × torque with direct switching

300 rpm

1000 rpm

600 rpm

1200 rpm