Electrical Machines In travelling cranes for swing action which motor is preferred? Capacitor type induction motors. AC slip ring IM. Reluctance motor. DC series motor. Capacitor type induction motors. AC slip ring IM. Reluctance motor. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along quadrature axis and interpolar axis quadrature axis and direct axis direct axis and interpolar axis direct axis and indirect axis quadrature axis and interpolar axis quadrature axis and direct axis direct axis and interpolar axis direct axis and indirect axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between 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 the supply voltage and the back emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal DC generated is one that has _____________ voltage regulation. positive. low. negative. zero. positive. low. negative. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Current in a coil undergoing commutation is not able to get reversed completely by the end of commutation period. It is due to coil resistance. None of these reactance voltage induced in the coil. armature emf. coil resistance. None of these reactance voltage induced in the coil. armature emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements regarding dc machines : 1. possible resistance of shunt-field winding is 1 Ω 2. possible resistance of series-field winding is 1 Ω 3. electrographite brushes are used for 230 V, 10 A machines 4. Copper-graphite brushes are used for 230 V, 10 A machines 5. Possible armature-circuit resistance is 1 Ω From these, the correct statements are 1, 4 1, 3, 5 2, 3 , 5 2, 4 ,5 1, 4 1, 3, 5 2, 3 , 5 2, 4 ,5 ANSWER DOWNLOAD EXAMIANS APP
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