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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 internal energy change in a system that has absorbed 2 kcals of heat
- The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field
- When a metallic surface is illuminated with radiation of wavelength λ,
- The wavelength of X-rays is in the range
- The magnetic susceptibility of a material of a rod is 449. Permeability of vaccum
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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