Single Phase Motors The speed control of universal motor used for sewing machines is by Varying the resistance Centrifugal mechanism Tapping the field Friction Varying the resistance Centrifugal mechanism Tapping the field Friction ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors Which of the following motor can be used for unity power factor? Capacitor run motor Shaded pole motor Scharge motor Hysteresis motor Capacitor run motor Shaded pole motor Scharge motor Hysteresis motor ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors Which of the following single phase motor is available with speed as low as one revolution per month? Universal Reluctance Shaded pole Hysteresis Universal Reluctance Shaded pole Hysteresis ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors If a particular application needs high speed and high starting torque, then which of the following motor will bepreferred ? Capacitor start motor Universal motor Shaded pole type motor Capacitor start and run motor Capacitor start motor Universal motor Shaded pole type motor Capacitor start and run motor ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors Capacitor motors _______resistance split phase induction motors. Are less costly than Poor starting torque than Cost about the same as Are costlier than Are less costly than Poor starting torque than Cost about the same as Are costlier than ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors For the same rating, the size of a single phase induction motor is about _______ that of the corresponding 3-phase induction motor. The same as 0.33 times 1.5 times 3 times The same as 0.33 times 1.5 times 3 times ANSWER DOWNLOAD EXAMIANS APP
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