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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]
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An inclined plane makes an angle of 30° with the horizontal.A solid sphere
- A body is thrown vertically up with a velocity u.It passes three points A,B and C
- The displacement of particle is given by x=aₒ+(a₁t/2)-(a₂t²/3) what is acceleration?
- A nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- What is the wavelength of light for the least energetic photon emitted
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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