Electrical Machines which of the following losses are negligible in blocked rotor test? iron loss mechanical loss copper loss both A and B iron loss mechanical loss copper loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does happen if tripled harmonics given to induction motor? Nothing will happen. Will results in short circuit. Fail to start. Will results in open circuit. Nothing will happen. Will results in short circuit. Fail to start. Will results in open circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5Ω and back back emf 200 V is 440 A. 400 A. 44 A. 40 A. 440 A. 400 A. 44 A. 40 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, lap winding is used in where greater load is connected. high voltage and low current applications. where constant speed is required. high current and low voltage applications. where greater load is connected. high voltage and low current applications. where constant speed is required. high current and low voltage applications. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will run at very high speed. run at very low speed. burn. start haunting. run at very high speed. run at very low speed. burn. start haunting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The squirrel cage induction motors are provided with blades in order to balance the rotor dynamically. eliminate noise. facilitate cooling of rotor. none of these. balance the rotor dynamically. eliminate noise. facilitate cooling of rotor. none of these. ANSWER DOWNLOAD EXAMIANS APP
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