Single Phase Motors Most of the troubles of single phase induction motors are traceable to the _______ Main winding Starting switch Shaft bearings Rotor bars Main winding Starting switch Shaft bearings Rotor bars ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will Draw excessive armature current and may burn out Become unstable Fall out of synchronism and come to stand still Run as induction motor Draw excessive armature current and may burn out Become unstable Fall out of synchronism and come to stand still Run as induction motor ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors In a universal motor, the most common cause of brush sparking is all of these shorted field winding? high commutator mica open armature winding all of these shorted field winding? high commutator mica open armature winding ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors The direction of rotation of shaded pole motor depends on ______ Supply frequency Supply voltage Which half of the pole is shaded Number of poles on the stator Supply frequency Supply voltage Which half of the pole is shaded Number of poles on the stator ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors The full load efficiency of a shaded pole motor is about _______ 5 to 10% 30 to 35% 70 to 80% 60 to 70% 5 to 10% 30 to 35% 70 to 80% 60 to 70% ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors When a universal motor is operated on no load, its speed is limited by Armature reaction Windage and friction Weight of the armature Supply voltage frequency Armature reaction Windage and friction Weight of the armature Supply voltage frequency ANSWER DOWNLOAD EXAMIANS APP
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