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The power factor of an AC circuit having resistance R and inductance L connected in series to an AC source of angular frequency ω is
Options
(a) zero
(b) ωL/R
(c) R/√R²+ω²L²
(d) R/ωL
Correct Answer:
R/√R²+ω²L²
Explanation:
power factor, cos ɸ = R / Z = R / √[R² +ω²L²]
Related Questions: - Large transformers, when used for some time, become hot and are cooled by circulating
- Alternating current is transmitted to distant places at
- A potentiometer wire of length L and a resistance r are connected in series with
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- Which two of the following five physical parameters have the same dimensions?
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Large transformers, when used for some time, become hot and are cooled by circulating
- Alternating current is transmitted to distant places at
- A potentiometer wire of length L and a resistance r are connected in series with
- A bar magnet of pole strength 10 A-m is cut into two equal parts breadthwise.
- Which two of the following five physical parameters have the same dimensions?
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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