| ⇦ |
| ⇨ |
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: - A particle moves along the x-axis such that its co-ordinate (x) varies with time (t)
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- The speed of an electron having a wavelength of 10⁻¹⁰ m is
- On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck
- The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle moves along the x-axis such that its co-ordinate (x) varies with time (t)
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- The speed of an electron having a wavelength of 10⁻¹⁰ m is
- On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck
- The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature
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