Questions
Armature current in dc motor will be maximum when
a
Motor has acquired maximum speed
b
Motor has acquired intermediate speed
c
Motor has just started moving
d
Motor is switched off
detailed solution
Correct option is C
Motor e.m.f. equation Eb=V−IaRaAt starting Eb=0, so Ia will be maximum.Talk to our academic expert!
Similar Questions
A square wire loop, of side a has a long straight wire carrying a constant current i that passes through the centre of the loop and perpendicular to its plane as shown in Fig.
The current induced in the square loop is
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