Electrical Machines The compensating winding in a DC machine is located on pole shoes to avoid the sparking at the brushes. is located on commutating poles for improving commutation. is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. is located on pole shoes to avoid the sparking at the brushes. is located on commutating poles for improving commutation. is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 12. 7. 4. 3. 12. 7. 4. 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a part of transformer? Commutator. Radiator. Conservator tank. Tap changer. Commutator. Radiator. Conservator tank. Tap changer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does the use the of height flux density value in transformer design lead to? Reduced copper loss. Decrease in weight/KVA. Increase in weight/KVA. Reduced iron loss. Reduced copper loss. Decrease in weight/KVA. Increase in weight/KVA. Reduced iron loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? K × input power None of these both A and B (1-K) × input power K × input power None of these both A and B (1-K) × input power ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are slot wedges in a DC machine made of? Mild steel. Fibre. Silicon steel. Cast iron. Mild steel. Fibre. Silicon steel. Cast iron. ANSWER DOWNLOAD EXAMIANS APP
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