| ⇦ | 
| ⇨ |
The rms current in an AC circuit is 2 A. If the wattless current be √3 A, what is the power factor of the circuit?
Options
(a) (1/2)
(b) (1/3)
(c) 1/√3
(d) 1/√2
Correct Answer:
(1/2)
Explanation:
We know that, Iwʟ = I(rms) sin ɸ
⇒ √3 = 2 sin ɸ or, sin ɸ = √3 / 2 ⇒ ɸ = 60°
So, power factor = cos ɸ = cos 60° = 1 / 2
Related Questions: - An explosion blows a rock into three parts. Two parts go off at right angles to each other
- what is the de-Broglie wavelength of the electron accelerated through a potential
- A galvanometer has a resistance 50Ω. A resistance of 5Ω is connected parallel to it.
- 3 persons are initially at the 3 corners of an equilateral triangle
- As a result of interference of two coherent sources of light, energy is
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An explosion blows a rock into three parts. Two parts go off at right angles to each other
- what is the de-Broglie wavelength of the electron accelerated through a potential
- A galvanometer has a resistance 50Ω. A resistance of 5Ω is connected parallel to it.
- 3 persons are initially at the 3 corners of an equilateral triangle
- As a result of interference of two coherent sources of light, energy is
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply