Electrical Engineering MCQs

Page No. 260

In case of a shaded pole motor the direction of rotation of the motor is__________?


a from main pole to shaded pole


b from shaded pole to main pole


ceither of the above depending on voltage


d either of the above depending on power factor



Which of the following single-phase induction motors is generally used in time phonographs ?


a Resistance start


bCapacitor start capacitor run


cShaded pole


d Universal


View Answer Shaded pole

Which of the following motors has highest starting torque ?


aRepulsion motor


bShaped pole motor


cCapacitor-start motor


d Split-phase motor


View Answer Capacitor-start motor

Which of the following motors can be run on AC. as well as D.C. supply ?


aUniversal motor


bRepulsion motor


cSynchronous motor


dReluctance motor


View Answer Universal motor

In A.C. series motor compensating winding is employed to_____________?


areduce the effects of armature reaction


b increase the torque


creduce sparking at the brushes


dnone of the above



In a two value capacitor motor, the capacitor used for running purposes is_______________?


aair capacitor


bpaper spaced oil filled type


cceramic type


d a.c. electrolytic type



In split-phase motor auxiliary winding is of___________?


athick wire placed at the bottom of the slots


bthick wire placed at the top of the slots


cthin wire placed at the top of the slots


d thin wire placed at the bottom of the slots



Single phase induction motor usually operates on__________?


a 0.6 power factor lagging


b 0.8 power factor lagging


c0.8 power factor leading


dunity power factor



Which of the following motors will operate at high power factor ?


aShaped pole motor


bSplit phase motor


cCapacitor start motor


dCapacitor run motor


View Answer Capacitor run motor

Which of the following single-phase motors is suitable for timing and control purposes ?


aReluctance motor


b Series motor


cRepulsion motor


dUniversal motor


View Answer Reluctance motor

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