THREE PHASE INDUCTION MOTORS QUIZ

Its power factor remains constant

Its power factor goes on increasing even after full load

Its power factor goes on decreasing

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

Flexible

Stiff

Hollow

Any of the listed here

Aluminium

Copper

Carbon

Phospor bronze

k/torque with direct switching

K2 × torque with direct switching

k2/torque with direct switching

K × torque with direct switching

65%

None of the listed here

40%

90%

Either more or less than the number of

Always eqaul to the number of

Always greater than the number of

Always less than the number of

Star-delta starting

Direct on line

By auto transformer starting

None of the listed here

Rotor current

Rotor power factor

Rotor emf

Shaft diameter

None of the listed here

Equal to stator poles

Even number

Prime number

(S-1) × rotor input

(1+S) × rotor input

(1-S) × rotor input

S × rotor input