If field current is decreased in shunt dc motor, the speed of the motor

(a) remains same.

(b) increases.

(c) decreases.

(d) none of the above.
by
retagged by

2 Answers

0 like 0 dislike
 increases because field current decrease and field flux decrease and N is inversely proportional field flux so speed of motor is increase
by
0 like 0 dislike
It increases because field current is directly proportional to the flux and flux is directly proportional to the armature current which is inversely proportional to the back emf and again back emf is directly proportional to the speed.
by

Related questions

1 answer
1 answer
2 answers
1 answer
0 answers
asked Mar 15, 2018 in Electrical Machine by Quiz | 20 views
0 answers
0 answers
1 answer

9,129 questions

7,895 answers

145 comments

3,205 users