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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: - A linear aperture whose width is 0.02 cm is placed immediately in front of a lens
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A linear aperture whose width is 0.02 cm is placed immediately in front of a lens
- The coefficient of performance of a refrigerator is 5. If the temperature inside
- Two points are located at a distance of 10 m and 15 m from the source of oscillation
- Fission of nuclei is possible because the binding energy per nucleon in them
- A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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