Navigate

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.

ML2012
admin:

Related Questions

  1. The most important characteristic of electron in the production of X-rays is
  2. If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
  3. In Young’s double slit experiment, when wavelength used is 6000Å and the screen
  4. A round disc of moment of inertia i₂ about its axis perpendicular to its plane
  5. α- particles, β – particles and γ – rays are all having same energy.