Electrical Machines When two DC series motors are connected in parallel, the resultant speed is more than normal speed. normal speed. zero. less than normal speed. more than normal speed. normal speed. zero. less than normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a Dc generator the magnetic neutral axis coincide with geometrical neutral axis, when the generator runs on designed speed. the generator runs on full load. the generator runs on overload. there is no load on the generator. the generator runs on designed speed. the generator runs on full load. the generator runs on overload. there is no load on the generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will remains almost constant. The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will increase gradually. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to improve power factor. reduce copper loss. improve starting torque. improve efficiency. improve power factor. reduce copper loss. improve starting torque. improve efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High inrush of current during a starting of DC motor can efficiently be restricted to a safer value by increasing the _________________ resistance. armature circuit both A and B none of above shunt field armature circuit both A and B none of above shunt field ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? core loss only Copper loss both 1 and 2 windage and friction loss core loss only Copper loss both 1 and 2 windage and friction loss ANSWER DOWNLOAD EXAMIANS APP
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