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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
- The first line in Lyman series has wavelength λ. The wavelength
- The tension in a piano wire is 10 N. What should be the tension in the wire to produce
- The self induced e.m.f. in a 0.1 H coil when the current in it is changing
- Which of the following phenomena support the wave theory of light?
- Two identical cells of the same e.m.f. and same internal resistance
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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