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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
- A nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- The damping force on an oscillator is directly proportional to the velocity.
- Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing
- Which of the following particles will have minimum frequency of revolution
- Which of the following is or the property of a cathode ray
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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