Electrical Machines A generator may loose residual magnetism due to over excitation. heating. any of these. vibrations. over excitation. heating. any of these. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In most condition which frame of motor will be preferred? Totally enclosed fan coiled. Splash proof. Drip proof. Open type. Totally enclosed fan coiled. Splash proof. Drip proof. Open type. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines _____________ types of induction motor are widely used. Slip ring IM. Squirrel cage IM. Single phase IM. Three phase IM. Slip ring IM. Squirrel cage IM. Single phase IM. Three phase IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________. 30 %. 1.5 %. 5 %. 2.67 %. 30 %. 1.5 %. 5 %. 2.67 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor when started on no load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be cogging. crawling. locking. plugging. cogging. crawling. locking. plugging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing the field of DC generator means making the magnetic losses forces parallel. neutralising residual magnetism. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. making the magnetic losses forces parallel. neutralising residual magnetism. increasing flux density by adding extra turns of winding. creating residual magnetism by a DC source. ANSWER DOWNLOAD EXAMIANS APP
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