Electrical Machines In DC generators, the residual magnetism is of the order of 15 %. 10 %. 20 %. 2.5 %. 15 %. 10 %. 20 %. 2.5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The frame of an induction motor is made of silicon steel. aluminium. closed grained cast iron. stainless steel. silicon steel. aluminium. closed grained cast iron. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 30. 270. 45. 180. 30. 270. 45. 180. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when driven without any excitation, showed an open circuit voltage of 12 V. When the field winding was excited, the voltage dropped to zero. It happened because there was a break in the armature circuit field resistance was higher than critical resistance field winding was wrongly connected there was no residual magnetism in the field circuit there was a break in the armature circuit field resistance was higher than critical resistance field winding was wrongly connected there was no residual magnetism in the field circuit ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following load normally needs starting torque more than rated torque? Blowers. Air compressors. Centrifugal pumps. Conveyers. Blowers. Air compressors. Centrifugal pumps. Conveyers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has the highest power factor at full load? Shaded pole Capacitor run Resistance split phase Capacitor start Shaded pole Capacitor run Resistance split phase Capacitor start ANSWER DOWNLOAD EXAMIANS APP
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