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. An alternating voltage given as, V=100√2 sin100t V is applied to a capacitor
  2. The kirchoff’s first law (∑i=0) and second law (∑iR=∑E), where the symbols
  3. Two bubbles A and B (A>B) are joined through a narrow tube. Then
  4. If the error in the measurement of momentum of particle is (+100%)
  5. 3 persons are initially at the 3 corners of an equilateral triangle