Electrical Machines In a DC machine, the angle between the stator and rotor fields is 180o. 0o. 90o. dependent upon the load. 180o. 0o. 90o. dependent upon the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The use of double squirrel cage winding on the rotor provides a large starting torque. higher efficiency. low noise. reduced starting torque. a large starting torque. higher efficiency. low noise. reduced starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt= Ea + Iara Vt = Ea + Ia(ra + rs) Vt= Ea– Iara Vt = Ea + Iara+ ILrs Vt= Ea + Iara Vt = Ea + Ia(ra + rs) Vt= Ea– Iara Vt = Ea + Iara+ ILrs ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor power factor at starting is low as compared to that while running. power factor at starting in the same as that while running. power factor at starting is high as compared to that while running. none of them. power factor at starting is low as compared to that while running. power factor at starting in the same as that while running. power factor at starting is high as compared to that while running. none of them. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The self induced emf in the coil undergoing commutation is called the None of these dynamically induced voltage. reactance voltage. statically induced voltage. None of these dynamically induced voltage. reactance voltage. statically induced voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The efficiency of a transformer is mainly dependent on stray losses. core losses. copper losses. dielectric losses. stray losses. core losses. copper losses. dielectric losses. ANSWER DOWNLOAD EXAMIANS APP
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