Electrical Machines The crawling in the induction motor is caused by low voltage supply high loads harmonics developed in the motor improper design of stator laminations low voltage supply high loads harmonics developed in the motor improper design of stator laminations 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 power factor will reduce its speed will increase its speed will reduce its efficiency will improve its power factor will reduce its speed will increase its speed will reduce 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? 19% 40% 5% 10% 19% 40% 5% 10% 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 1/4 of the intial value 4 time the initial value twice the initial value 1/2 of the initial value 1/4 of the intial value 4 time the initial value twice the initial 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 S 1-S 1/(1-S) 1/S S 1-S ANSWER DOWNLOAD EXAMIANS APP
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