Single Phase Motors In case of a reluctance motor, when the load is increased so that it cannot maintain synchronous speed the motor will Run as induction motor Become unstable Draw excessive armature current and may burn out Fall out of synchronism and come to stand still Run as induction motor Become unstable Draw excessive armature current and may burn out Fall out of synchronism and come to stand still ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors A Reluctance motor Is constant speed motor Need no dc excitation Is self starting All of the listed here Is constant speed motor Need no dc excitation Is self starting All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors Which of the following statements regarding repulsion-start induction motor is incorrect ? It makes quite a bit of noise on starting It requires more maintenance of commutator and other mechanical devices In fractional horse power motors, it has replaced the capacitor motors It is not easily reversed It makes quite a bit of noise on starting It requires more maintenance of commutator and other mechanical devices In fractional horse power motors, it has replaced the capacitor motors It is not easily reversed ANSWER DOWNLOAD EXAMIANS APP
Single Phase Motors If the capacitor of a single-phase motor is short-circuited the motor will run in the same direction at reduced r.p.m. the motor will run in reverse direction the motor will run the motor will not start the motor will run in the same direction at reduced r.p.m. the motor will run in reverse direction the motor will run the motor will not start 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 Most of the fractional horsepower motors have either hard and annealed bearings ball or roller bearings plain or sleeve bearings soft and porous bearings hard and annealed bearings ball or roller bearings plain or sleeve bearings soft and porous bearings ANSWER DOWNLOAD EXAMIANS APP
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