An electric train employing a dc series motor is running at a fixed speed, when a sudden slight drop in the mains voltage occurs. This would result in
A. drop in speed and rise in current.
B. rise in speed and drop in current.
C. rise in speed and rise in current.
D. drop in speed with current unaltered.
Answer:A
An electric train employing a dc series motor is running at a fixed speed, when a sudden slight drop in the mains voltage occurs. This would result in
A. drop in speed and rise in current. B. rise in speed and drop in current. C. rise in speed and rise in current. D. drop in speed with current unaltered.