Electrical Machines The rotor winding for a 3-phase slip-ring induction motor having delta-connected stator must be connected in star. None of these delta or star according to need. delta. star. None of these delta or star according to need. delta. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous condensers are used to improve starting torque improve the power factor reduce hunting All of these improve starting torque improve the power factor reduce hunting All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3.33% +3% -3% -3.33% +3.33% +3% -3% -3.33% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case the conditions for maximum power for DC motor are established, the efficiency of the motor will be Around 100 %. Any where between 75 % and 90 %. Less than 50 % Around 90 % Around 100 %. Any where between 75 % and 90 %. Less than 50 % Around 90 % 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 Flashing of DC generator means creation of residual magnetism by a DC source. None of these neutralization of residual magnetism. increasing flux density by providing extra ampere-turns in field. creation of residual magnetism by a DC source. None of these neutralization of residual magnetism. increasing flux density by providing extra ampere-turns in field. ANSWER DOWNLOAD EXAMIANS APP
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