Electrical Machines The slot edges in a DC machine are made of Silicon steel. Cast iron. Fibre. Mild steel. Silicon steel. Cast iron. Fibre. Mild steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to improve starting torque. improve efficiency. reduce copper loss. improve power factor. improve starting torque. improve efficiency. reduce copper loss. improve power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is an advisable to use auto transformer if the transformation ratio is Greater than 1. 0.5. 0.25. near to 1. Greater than 1. 0.5. 0.25. near to 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt= Ea + Iara Vt= Ea– Iara Vt = Ea + Iara+ ILrs Vt = Ea + Ia(ra + rs) Vt= Ea + Iara Vt= Ea– Iara Vt = Ea + Iara+ ILrs Vt = Ea + Ia(ra + rs) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has the highest starting torque? Same in both induction motors. None of these Slip ring induction motor. Squirrel cage induction motor. Same in both induction motors. None of these Slip ring induction motor. Squirrel cage induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a polyphase induction motor helps to increase the starting torque. reduce the magnetizing current. reduce the chance of cogging. reduce the chance of crawling. increase the starting torque. reduce the magnetizing current. reduce the chance of cogging. reduce the chance of crawling. ANSWER DOWNLOAD EXAMIANS APP
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