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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
- Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear
- What is the nature of Gaussian surface involved in Gauss’s law of electrostatics?
- A long wire carrying a steady current is bent into a circular loop of one turn.
- A particle moving along X-axis has acceleration f,at time t given by f=fₒ(1- t/T)
- A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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