Electrical Machines The slot edges in a DC machine are made of Fibre. Cast iron. Silicon steel. Mild steel. Fibre. Cast iron. Silicon steel. Mild steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between the supply voltage and the back emf. magnetizing electric current and back emf. the rotating stator flux and rotor flux. None of these the supply voltage and the back emf. magnetizing electric current and back emf. the rotating stator flux and rotor flux. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field to a DC source. in reverse. to an AC source. to earth. to a DC source. in reverse. to an AC source. to earth. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc motors, under leading pole tips flux density will--------? increase None of these decrease either increase or decrease increase None of these decrease either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of high viscosity. low BDV. low resistivity. low viscosity. high viscosity. low BDV. low resistivity. low viscosity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a polyphase induction motor helps to reduce the magnetizing current. reduce the chance of cogging. increase the starting torque. reduce the chance of crawling. reduce the magnetizing current. reduce the chance of cogging. increase the starting torque. reduce the chance of crawling. ANSWER DOWNLOAD EXAMIANS APP
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