Electrical Machines In a 3 - Φ wound rotor induction motor the short circuit gear is used to short circuit the stator phases of the motor. rotor at slip rings. None of these starting resistance in the starter. stator phases of the motor. rotor at slip rings. None of these starting resistance in the starter. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To achieve spark less commutation brushes of DC generator are rocked ahead so as to bring them just behind the magnetic neutral axis. None of these in magnetic neutral axis. just ahead of magnetic neutral axis. just behind the magnetic neutral axis. None of these in magnetic neutral axis. just ahead of magnetic neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Equalizer rings are used in which of the followings? None of these lap winding both 1 and 2 wave winding None of these lap winding both 1 and 2 wave winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is done in speed control of DC motor by field flux control? Any of above. Inserting an additional resistance in the armature circuit. Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the field circuit. Any of above. Inserting an additional resistance in the armature circuit. Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the field circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When two DC series motors are connected in parallel, the resultant speed is zero. more than normal speed. less than normal speed. normal speed. zero. more than normal speed. less than normal speed. normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor must started on no load because it would Run at dangerously high speed. Fail to start without load. Not develop starting torque. Draw more current without producing sufficient torque. Run at dangerously high speed. Fail to start without load. Not develop starting torque. Draw more current without producing sufficient torque. ANSWER DOWNLOAD EXAMIANS APP
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