A. hysteresis loss
B. magnetisation of rotor
C. eddy current loss
D. electromagnetic induction
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Which of the following motor will give the highest starting torque ?
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The power factor of a single-phase induction motor is usually?
A. D.C. shunt motor
B. Schrage motor
C. Repulsion start and induction run motor
D. Universal motor
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A shaded pole motor can be used for_____________?
A. lagging
B. always leading
C. unity
D. unity to 0.8 leading
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In a capacitor start single-phase motor, when capacitor is replaced by a resistance____________?
A. toys
B. hair dryers
C. circulators
D. any of the above
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Short-circuiter is used in_____________?
A. torque will increase
B. the motor will consume less power
C. motor will run in reverse direction
D. motor will continue to run in same direction
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The range of efficiency for shaded pole motors is______________?
A. repulsion induction motor
B. repulsion motor
C. repulsion start induction run motor
D. none of the above
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Burning out of winding is due to___________?
A. 95% to 99%
B. 80% to 90%
C. 50% to 75%
D. 5% to 35%
0
Direction of rotation of a split phase motor can be reversed by reversing the connection of__________?
A. short circuited capacitor
B. capacitor value hiving changed
C. open circuiting of capacitor
D. none of the above
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Which of the following motors is inherently self starting ?
A. running winding only
B. starting winding only
C. either A. or (b)
D. both A. and (b)
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