Electrical Machines In dc motors, under leading pole tips flux density will--------? None of these increase decrease either increase or decrease None of these increase decrease either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field to earth. to an AC source. to a DC source. in reverse. to earth. to an AC source. to a DC source. in reverse. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC motor are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor ? 16.67%. 15.30%. 14.28%. 18.25%. 16.67%. 15.30%. 14.28%. 18.25%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip 0 .001 %. 3.33 %. None of these 3 %. 0 .001 %. 3.33 %. None of these 3 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In normal dc machines operating at full-load conditions, the most powerful electromagnet is field winding armature winding interpole winding interpole and compensating windings together field winding armature winding interpole winding interpole and compensating windings together ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are 1/√3, 1/√3 1/3, 1/3 1/3, 1/√3 1/√3, 1/3 1/√3, 1/√3 1/3, 1/3 1/3, 1/√3 1/√3, 1/3 ANSWER DOWNLOAD EXAMIANS APP
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