Electrical Machines The application that need frequent starting and stopping is lifts and hoists. jaw crushers. paper mills. blowers. lifts and hoists. jaw crushers. paper mills. blowers. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard control is basically a ___________ control method. Field diverter control. Field control. Armature resistance control. Armature voltage control. Field diverter control. Field control. Armature resistance control. Armature voltage control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motors, there is large decrease in maximum power factor when the dispersion coefficient is ________________. increased. remains same. decreased. kept constant to certain value. increased. remains same. decreased. kept constant to certain value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3- phase synchronous motor can operate over a wide range of power factors i.e. from lagging to leading power factor. This is achieved by varying the speed. changing the load. varying the applied voltage. changing the field excitation. varying the speed. changing the load. varying the applied voltage. changing the field excitation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determined by Fleming's left hand rule. Fleming's right hand rule. Lenz's law. Ampere's law. Fleming's left hand rule. Fleming's right hand rule. Lenz's law. Ampere's law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because field winding was wrongly connected field system lost residual magnetism field resistance was higher than critical resistance there was a break in the armature circuit field winding was wrongly connected field system lost residual magnetism field resistance was higher than critical resistance there was a break in the armature circuit ANSWER DOWNLOAD EXAMIANS APP
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