Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.2 lead 0.9 lag unity 0.2 lag 0.2 lead 0.9 lag unity 0.2 lag ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve reduced size. quick acceleration. high efficiency. low starting torque. reduced size. quick acceleration. high efficiency. low starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field winding of a DC series motor is usually provided with thick wire in order to reduce eddy current to provide large flux. to reduce the insulation of materials. to provide large flux. as it carries large load current. in order to reduce eddy current to provide large flux. to reduce the insulation of materials. to provide large flux. as it carries large load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because it limits the speed of the motor. it limits the starting current to a safe value. None of these It starts the motor. it limits the speed of the motor. it limits the starting current to a safe value. None of these It starts the motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two 3-phase AC generators are such that one has twice the linear dimensions of the other. The field windings of each are excited to give identical sinusoidal air-gap flux density waveform. Both have the same number of stator slots and identical winding patterns. The conductor/slot in a big generator is K times that of the smaller one. The value of K to get equal no load voltage at same frequency is 8. 1/2. 1/4. 4. 8. 1/2. 1/4. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator in DC generator is used for collecting of current reduce losses convert AC armature current in to DC increase efficiency collecting of current reduce losses convert AC armature current in to DC increase efficiency ANSWER DOWNLOAD EXAMIANS APP
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