Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to improve efficiency. improve starting torque. reduce copper loss. improve power factor. improve efficiency. improve starting torque. reduce copper loss. improve power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 2 point starter 4 point starter All of these 3 point starter 2 point starter 4 point starter All of these 3 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following pairs is/are correct? All of these closed slot----- leakage flux is high semi closed slot-----leakage flux is moderate open slot----- leakage flux is less All of these closed slot----- leakage flux is high semi closed slot-----leakage flux is moderate open slot----- leakage flux is less ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field of a dc shunt motor gets opened while the motor is running, then the motor will become slow. armature current will drop motor will attain dangerously high speed armature will oscillate about original speed as the mean speed motor will become slow. armature current will drop motor will attain dangerously high speed armature will oscillate about original speed as the mean speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, brushes are always placed along magnetic neutral axis. armature axis. geometrical neutral axis. load axis. magnetic neutral axis. armature axis. geometrical neutral axis. load axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ slip ring motor has wound rotor. any of the above. double cage rotor. short-circuited rotor. wound rotor. any of the above. double cage rotor. short-circuited rotor. ANSWER DOWNLOAD EXAMIANS APP
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