Electrical Machines Eg (generated emf) and Eb (back emf) both are changes. same. none of above. different. changes. same. none of above. different. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are mechanically linked. inductively linked. conductively linked. electrically linked. mechanically linked. inductively linked. conductively linked. electrically linked. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brush-axis of a bipolar dc motor is rotated by 90°. The effect of this rotation on the back emf Eband the torque developed Tdwould be such that both Eb and Td are unchanged Eb is unchanged, but Td is zero both Eb and Td are zero Eb is zero, but Td is unchanged both Eb and Td are unchanged Eb is unchanged, but Td is zero both Eb and Td are zero Eb is zero, but Td is unchanged ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short circuit test on a transformer gives copper loss at full load. copper loss at any load. copper loss at half load. copper loss at over load. copper loss at full load. copper loss at any load. copper loss at half load. copper loss at over load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 200 V 115 V 460 V 230 V 200 V 115 V 460 V 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What does the use the of height flux density value in transformer design lead to? Decrease in weight/KVA. Reduced iron loss. Increase in weight/KVA. Reduced copper loss. Decrease in weight/KVA. Reduced iron loss. Increase in weight/KVA. Reduced copper loss. ANSWER DOWNLOAD EXAMIANS APP
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