MCQ
When the speed of a $dc$ motor increases the armature current
- AIncreases
- ✓Decreases
- CDoes not change
- DIncreases and decreases continuously
✓
Answer
Correct option: B.
Decreases
b
(b) With the increasing speed, $\omega$ increases.
(b) With the increasing speed, $\omega$ increases.
Thus current reduces due to increase in the back $e.m.f$
Moreover $i = \frac{{V - K\omega }}{R}$, $w$
More will lead to the lesser current.
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