| ⇦ | 
| ⇨ |
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: - What determines the nature of the path followed by the particle?
- The focal length of the objective of a terrestrial telescope is 80 cm
- The process of adding impurities to the pure semiconductor is called
- An electric dipole of dipole moment p is placed in a uniform external electric field
- In communication with help of antenna if height is doubled then the range
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- What determines the nature of the path followed by the particle?
- The focal length of the objective of a terrestrial telescope is 80 cm
- The process of adding impurities to the pure semiconductor is called
- An electric dipole of dipole moment p is placed in a uniform external electric field
- In communication with help of antenna if height is doubled then the range
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