GATE EE 2018 EXAM:Electrical Machines Quiz 7 for ESE & GATE EE Exams

Question 1

The type of single-phase induction motor having the highest power factor at full load is

Question 2

For a given stepper motor, the following torque has the highest numerical value.

Question 3

A rotating electrical machine having its self-inductances of both the stator and the rotor windings, independent of the rotor position will be definitely not develop

Question 4

A 230V, 50 Hz, 4-pole, single-phase induction motor is rotating in the clockwise (forward) direction at a speed of 1425 rpm. If the rotor resistance at standstill is 7.8Ω, then the effective rotor resistance in the backward branch of the equivalent circuit will be

Question 5

A 230V, 50 Hz, 4-pole, single-phase induction motor is rotating in the clockwise (forward) direction at a speed of 1425 rpm. If the rotor resistance at standstill is 7.8Ω, then the effective rotor resistance in the backward branch of the equivalent circuit will be

Question 6

In a single phase induction motor the fluctuating field is similar to:

Question 7

A single phase induction motor with only the main winding excited would exhibit the following response at synchronous speed