A hysteresis motor works on the principle of__________?
A hysteresis motor works on the principle of__________? A. hysteresis loss B. magnetisation of rotor C. eddy current loss D. electromagnetic induction
A hysteresis motor works on the principle of__________? A. hysteresis loss B. magnetisation of rotor C. eddy current loss D. electromagnetic induction
Which of the following motor will give the highest starting torque ? A. D.C. shunt motorB. Schrage motor C. Repulsion start and induction run motor D. Universal motor
The power factor of a single-phase induction motor is usually? A. lagging B. always leading C. unity D. unity to 0.8 leading
A shaded pole motor can be used for_____________? A. toys B. hair dryers C. circulatorsD. any of the above
In a capacitor start single-phase motor, when capacitor is replaced by a resistance____________? A. torque will increase B. the motor will consume less power C. motor will run in reverse directionD. motor will continue to run in same direction
Short-circuiter is used in_____________? A. repulsion induction motor B. repulsion motorC. repulsion start induction run motor D. none of the above
The range of efficiency for shaded pole motors is______________? A. 95% to 99% B. 80% to 90% C. 50% to 75%D. 5% to 35%
Burning out of winding is due to___________? A. short circuited capacitor B. capacitor value hiving changed C. open circuiting of capacitor D. none of the above
Direction of rotation of a split phase motor can be reversed by reversing the connection of__________? A. running winding only B. starting winding onlyC. either A. or (b) D. both A. and (b)
Which of the following motors is inherently self starting ? A. Split motorB. Shaded-pole motor C. Reluctance motor D. None of these