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. An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform
  2. A block slides from an inclination of 45°.If it takes time twice
  3. Fission of nuclei is possible because the binding energy per nucleon in them
  4. Two bodies of mass 1 kg and 3 kg have positive vectors i + 2j + k and -3i -2j + k
  5. The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be.