Electrical Machines Flashing of DC generator means neutralization of residual magnetism. None of these increasing flux density by providing extra ampere-turns in field. creation of residual magnetism by a DC source. neutralization of residual magnetism. None of these increasing flux density by providing extra ampere-turns in field. creation of residual magnetism by a DC source. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? 0 0.5 any of the above 1 0 0.5 any of the above 1 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 field terminal. generator armature terminal. motor field terminal. motor armature terminal. generator field terminal. generator armature terminal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The compensating winding in a DC machine is located on pole shoes to avoid the sparking at the brushes. is located in armature slots for compensation of the armature reaction. is located on pole shoes for avoiding the flashover at the commutator. is located on commutating poles for improving commutation. is located on pole shoes to avoid the sparking at the brushes. is located in armature slots for compensation of the armature reaction. is located on pole shoes for avoiding the flashover at the commutator. is located on commutating poles for improving commutation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machine armature windings are placed on rotor because of the necessity for generation of voltage. commutation. electromechanical energy conversion. development of torque. generation of voltage. commutation. electromechanical energy conversion. development of torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Starting torque. Operating speed. Full load current. Starting torque, operating speed, full load current. Starting torque. Operating speed. Full load current. Starting torque, operating speed, full load current. ANSWER DOWNLOAD EXAMIANS APP
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