Electrical Machines The crawling in the induction motor is caused by harmonics developed in the motor high loads improper design of stator laminations low voltage supply harmonics developed in the motor high loads improper design of stator laminations low voltage supply ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its efficiency will improve its speed will reduce its power factor will reduce its speed will increase its efficiency will improve its speed will reduce its power factor will reduce its speed will increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 10% 5% 19% 40% 10% 5% 19% 40% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When applied rated voltage per phase is reduce to one half, the starting torque of three phase squirrel cage induction motor becomes 1/2 of the initial value twice the initial value 4 time the initial value 1/4 of the intial value 1/2 of the initial value twice the initial value 4 time the initial value 1/4 of the intial value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/(1-S) 1-S 1/S S 1/(1-S) 1-S 1/S S ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS