Electrical Machines Open circuit test on transformer gives eddy current loss hysteresis loss both 1and 2 copper loss eddy current loss hysteresis loss both 1and 2 copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has negative speed regulation? Differential compound motors. Shunt motors. Both B and C. Series motors. Differential compound motors. Shunt motors. Both B and C. Series motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf in a dc machine is 1. stationary with respect to field poles 2. stationary with respect to armature 3. rotating with respect to field poles 4. rotating with respect to armature From these, the correct answer is 1, 4 2, 3 1, 3 2, 4 1, 4 2, 3 1, 3 2, 4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V, I and P V, I/2 and P/2 V/2, I/2 and P/4 V/2, I and P/2 V, I and P V, I/2 and P/2 V/2, I/2 and P/4 V/2, I and P/2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the brushes remain in contact with conductors which lie under north pole. there is no hard and fast rule for this. lie under south pole. lie in the inter polar gaps. lie under north pole. there is no hard and fast rule for this. lie under south pole. lie in the inter polar gaps. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC series generator, the terminal voltage with increase in load will increase gradually and then stay at rated voltage increase to rated voltage and then may decrease decrease remain nearly constant increase gradually and then stay at rated voltage increase to rated voltage and then may decrease decrease remain nearly constant ANSWER DOWNLOAD EXAMIANS APP
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