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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
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
- On observing light from three different stars P, Q and R, it was found that intensity
- What is the amount of energy released by deuterium and tritium fusion?
- A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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