Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. increased. kept constant to certain value. decreased. remains unchanged. increased. kept constant to certain value. decreased. remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to 45°. 75°. 0°. 30°. 45°. 75°. 0°. 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce iron loss. reluctance of core. volume of iron. volume of copper. iron loss. reluctance of core. volume of iron. volume of copper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed regulation of a DC motor is given as (NfL − NnL)/NnL. NnL − NfL. (NnL − NfL)/NfL. NnL/NfL. (NfL − NnL)/NnL. NnL − NfL. (NnL − NfL)/NfL. NnL/NfL. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does happen if tripled harmonics given to induction motor? Nothing will happen. Fail to start. Will results in open circuit. Will results in short circuit. Nothing will happen. Fail to start. Will results in open circuit. Will results in short circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft of induction motor may be unbalanced due to overload. uneven air gap. poor lubrication. overheating of winding. overload. uneven air gap. poor lubrication. overheating of winding. ANSWER DOWNLOAD EXAMIANS APP
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