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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
- In Wheatstone bridge, three resistors P,Q and R are conncected in three arms
- A bus is moving with a speed of 10 ms⁻¹ on a straight road
- A pellet of mass 1 g is moving with an angular velocity of 1 rad/s along a circle
- A parallel plate condenser with a dielectric of dielectric constant K between the plates
- A proton of mass m and charge q is moving in a plane with kinetic energy E. If there exists
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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