Single Phase Motors A 4-pole , 50 Hz single phase induction motor is running with a slip of 3.4%. The speed of the motor is 1120 rpm 1279 rpm 1449 rpm 1540 rpm 1120 rpm 1279 rpm 1449 rpm 1540 rpm ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors Which of the following motor can be used for unity power factor? Hysteresis motor Capacitor run motor Shaded pole motor Scharge motor Hysteresis motor Capacitor run motor Shaded pole motor Scharge motor ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors A universal motor can run on DC only None of the listed here AC only Either DC or AC DC only None of the listed here AC only Either DC or AC ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors In a universal motor, the most common cause of brush sparking is shorted field winding? high commutator mica all of these open armature winding shorted field winding? high commutator mica all of these open armature winding ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors Which of the following applications always have some load whenever switched on? Fan motors Vaccum cleaners Piston drills All of the listed here Fan motors Vaccum cleaners Piston drills All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors The full load efficiency of a shaded pole motor is about _______ 30 to 35% 60 to 70% 70 to 80% 5 to 10% 30 to 35% 60 to 70% 70 to 80% 5 to 10% ANSWER DOWNLOAD EXAMIANS APP