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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.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If alpha, beta and gamma rays carry same momentum, which has the longest
- If ∆Q>0 when heat flows into a system, ∆W>0 when work is done on the system
- The transverse nature of electromagnetic waves is proved by which of the following?
- A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N
- The displacement of a particle along the x-axis is given by x = a sin² ?t
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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