Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05? 0.905. 0.05. 20. 1.1. 0.905. 0.05. 20. 1.1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are the starters used for starting of cage motors? Star-delta starter. DOL starter. All of these. Auto transformer starter. Star-delta starter. DOL starter. All of these. Auto transformer starter. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The damper windings also called the squirrel cage windings or damper grids consists of short-circuited copper bars embedded in the field pole faces. are provided in a synchronous motor to make it self starting. are provided on the stator for improving power factor. both (A) and (B). consists of short-circuited copper bars embedded in the field pole faces. are provided in a synchronous motor to make it self starting. are provided on the stator for improving power factor. both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Doubled. Remains same. Four times. Eight times. Doubled. Remains same. Four times. Eight times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a induction motor helps to reduce the magnetizing current. reduce the chance of crawling. increase the starting torque. reduce the chance of cogging. reduce the magnetizing current. reduce the chance of crawling. increase the starting torque. reduce the chance of cogging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutators in DC machines have a role of which converts high voltage DC to low voltage DC. Both AC to DC and DC to AC. AC to DC. none of these. high voltage DC to low voltage DC. Both AC to DC and DC to AC. AC to DC. none of these. ANSWER DOWNLOAD EXAMIANS APP
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