Electrical Machines As compared to DOL starting, a cage induction motor with star-delta starting shall have reduced starting current. more starting time. more starting torque. smoother acceleration. reduced starting current. more starting time. more starting torque. smoother acceleration. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 200 V. 800 V. 100 V. 400 V. 200 V. 800 V. 100 V. 400 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC motor is connected across the AC supply it will Run at lower speed. Run at normal speed. Not run. Burn. Run at lower speed. Run at normal speed. Not run. Burn. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a induction motor helps to reduce the magnetizing current. increase the starting torque. reduce the chance of cogging. reduce the chance of crawling. reduce the magnetizing current. increase the starting torque. reduce the chance of cogging. reduce the chance of crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a dc motor the ratio Eb / E is indicative of ratio of input to output voltage. efficiency. ratio of starting to running torque. ratio of starting to running current. ratio of input to output voltage. efficiency. ratio of starting to running torque. ratio of starting to running current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will increase gradually. ANSWER DOWNLOAD EXAMIANS APP
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