Electrical Machines In DC generators, the residual magnetism is of the order of 15 %. 2.5 %. 20 %. 10 %. 15 %. 2.5 %. 20 %. 10 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC motor under constant terminal voltage what is the relation between torque (Te) and power (P) T∝ P T∝ P² T∝ P³ T is independent of P T∝ P T∝ P² T∝ P³ T is independent of P ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip rings of an induction motors are made of stainless steel. carbon. aluminium. phosphor bronze. stainless steel. carbon. aluminium. phosphor bronze. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is equal as power transformer. none of these. lesser than power transformer. higher than power transformer. equal as power transformer. none of these. lesser than power transformer. higher than power transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will increase. remains same. none of these. Decrease.d increase. remains same. none of these. Decrease.d ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is increased, the power factor is lagging power factor None of these unity power factor leading power factor lagging power factor None of these unity power factor leading power factor ANSWER DOWNLOAD EXAMIANS APP
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