An electric motor runs on DC source of emf 200 V and draws a current of 10 A.

An electric motor runs on DC source of emf 200 V and draws a current of 10 A. If the efficiency be 40%, then the resistance of armature is

Options

(a) 2Ω
(b) 8Ω
(c) 12Ω
(d) 16Ω

Correct Answer:

12Ω

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. Radii of curvature of a converging lens are in the rato 1:2. Its focal length
  2. Ratio of the radii of the nuclei with mass numbers 8 and 27 would be
  3. A particle with total energy E is moving in a potential energy region U(x)
  4. Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity
  5. A solid sphere is rotating in free space.If the radius of the sphere is increased