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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 particle of mass m executes simple harmonic motion with amplitude
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle of mass m executes simple harmonic motion with amplitude
- A particle is dropped vertically from rest, from a height.The time taken by it to fall
- The voltage of an a.c.supply varies with time (t) as V=120 sin 100 πt the maximum voltage
- Two planets at mean distances d₁ and d₂ from the sun have their frequencies n₁ and n₂
- If the number of radius of ²⁷Al is 3.6 Fermi, the approximate nuclear radius
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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