Electrical Machines If a DC Series motor is connected across an AC supply it will burn. run at lower speed. run at normal speed. not run. burn. run at lower speed. run at normal speed. not run. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following windings are necessary in case of all dc machines? lap winding closed winding open type winding wave winding lap winding closed winding open type winding wave winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field system of an alternator is usually excited 230 V AC. 3 - Φ, 50 Hz and 400 V. 250 / 250 V DC. 110 / 220 V AC. 230 V AC. 3 - Φ, 50 Hz and 400 V. 250 / 250 V DC. 110 / 220 V AC. 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 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 1/2 of the initial value twice the initial value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is advisable to start a DC series motor with some load to Limit the current. Limit the speed. Limit the flux. Avoid sparking. Limit the current. Limit the speed. Limit the flux. Avoid sparking. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines _____________ types of induction motor are widely used. Three phase IM. Squirrel cage IM. Single phase IM. Slip ring IM. Three phase IM. Squirrel cage IM. Single phase IM. Slip ring IM. ANSWER DOWNLOAD EXAMIANS APP
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