Electrical Machines In a transformer zero voltage regulation is achieved at a load power factor which is leading unity zero lagging leading unity zero lagging ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are slot wedges in a DC machine made of? Cast iron. Silicon steel. Mild steel. Fibre. Cast iron. Silicon steel. Mild steel. Fibre. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms is connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 340 A. 460 A. 250 A. 570 A. 340 A. 460 A. 250 A. 570 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because None of these It starts the motor. it limits the starting current to a safe value. it limits the speed of the motor. None of these It starts the motor. it limits the starting current to a safe value. it limits the speed of the motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same magnetizing current to remain constant, the supply voltage must be reduced by 20% increased by 10% increased by 20% reduced by 10% reduced by 20% increased by 10% increased by 20% reduced by 10% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced The speed will remains almost constant. The speed will increase in proportion to reduction in load. The speed will increase abruptly. DC Shunt Motor The speed will remains almost constant. The speed will increase in proportion to reduction in load. The speed will increase abruptly. DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
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