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. If sound wave travel from air to water, which of the following remains unchanged?
  2. When an α-particle of mass m moving with velocity ν bombards on a heavy nucleus
  3. When the speed of electron beam used in Young’s double slit experiment is increased,
  4. In which case positive work has to be done in seperating them?
  5. If radius of the ₁₃Al²⁷ nucleus is taken to be Rᴀı, then the radius of ₅₃Te¹²⁵ nucleus