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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.
Related Questions: - A series R-C circuit is connected to an alternating voltage source. Consider two
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e=300 sin[(100 π)t] V
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A series R-C circuit is connected to an alternating voltage source. Consider two
- Two bulbs 40 watt and 60 watt and rated voltage 240 V are connected in series
- An alternating emf given by equation e=300 sin[(100 π)t] V
- An oscillator circuit consists of an inductance of 0. mH and a capacitor of 20 μF.
- The magnetic moment of a diamagnetic atom is
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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