Electrical Machines DC machine is a none of above are correct. convection machine. conduction machine. both are correct. none of above are correct. convection machine. conduction machine. both are correct. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard method of speed control, the direction of rotation of motor is reversed usually reversing the connection of the motor field terminal. motor armature terminal. generator armature terminal. generator field terminal. motor field terminal. motor armature terminal. generator armature terminal. generator field terminal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous reactance of an alternator represents a reactance operating at synchronous speed All of these field winding reactance armature reactance and leakage reactance a reactance operating at synchronous speed All of these field winding reactance armature reactance and leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field divertor method of speed control of a DC series motor gives speed above rated one due to reduction of Armature current. Line current. Field current. None of above. Armature current. Line current. Field current. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to improve starting torque. reduce copper loss. improve power factor. improve efficiency. improve starting torque. reduce copper loss. improve power factor. improve efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. remains unchanged. kept constant to certain value. decreased. increased. remains unchanged. kept constant to certain value. decreased. increased. ANSWER DOWNLOAD EXAMIANS APP
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