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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 point charge q is placed at a distance x/2 directly above the centre of a cube
- When aluminium is added as an impurity to silicon, the resulting material is
- On heating a ferromagnetic substance above curie temperature
- The electric field in a certain region is acting radially outward and is given by E=Ar.
- Maximum velocity of the photoelectron emitted by a metal is 1.8×10⁶ ms⁻¹.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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