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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 temperature coefficient of the resistance of a wire is 0.00125 per ⁰C.
- A 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- Light propagates rectilinearly because of its
- A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
- A body projected vertically from the earth reaches a height equal to earth’s radius
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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