Electrical Machines The speed of stator rotating magnetic field (RMF) with respect to rotor is S.Ns Nr Zero Ns S.Ns Nr Zero Ns ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Induction motors provided with open slots have leading power factor. less breakdown torque. more breakdown torque. higher efficiency. leading power factor. less breakdown torque. more breakdown torque. higher efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direction of rotation of DC motor is reversed by Interchanging armature and field connection. Reversing supply connection. Adding resistance to field circuit. Reversing armature connection or field connection. Interchanging armature and field connection. Reversing supply connection. Adding resistance to field circuit. Reversing armature connection or field connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its speed will reduce its speed will increase its efficiency will improve its power factor will reduce its speed will reduce its speed will increase its efficiency will improve its power factor will reduce ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, maximum power occurs at a load angle of Greater than 90° 0° 90° less than 90° Greater than 90° 0° 90° less than 90° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is asynchronous motor. asynchronous generator. synchronous motor. synchronous generator. asynchronous motor. asynchronous generator. synchronous motor. synchronous generator. ANSWER DOWNLOAD EXAMIANS APP
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