engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Electrician and Wireman Electrical Machines DC Motors
The current taken by a D.C. motor armature is given by the formula ________
1
\({I_a} = \frac{{V - {E_b}}}{{{R_a}}}\)
2
\({I_a} = \frac{{V + {E_b}}}{{{R_a}}}\)
3
\({I_a} = \frac{V}{{{R_a}}}\)
4
\({I_a} = \frac{{{E_b}}}{{{R_a}}}\)