| ⇦ | 
| ⇨ |
If an A.C. mains supply is given to be 220 V, what would be the average e.m.f. during a positive half cycle?
Options
(a) 256 V
(b) 512 V
(c) 386 V
(d) 198 V
Correct Answer:
198 V
Explanation:
Vₐᵥ = 2V₀ / π = (2 / π) [V(rms) × √2] = (2√2 / π) × V(rms)
Vₐᵥ = (2√2 / π) × 220 = 198 V
Related Questions: - The work done in which of the following processes is zero?
- A particle of mass m is projected with velocity v making an angle of 45° with
- Which one of the following is not a unit of young’s modulus?
- A solid sphere, a hollow sphere and a ring are released from top of an inclined
- In which case positive work has to be done in seperating them?
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The work done in which of the following processes is zero?
- A particle of mass m is projected with velocity v making an angle of 45° with
- Which one of the following is not a unit of young’s modulus?
- A solid sphere, a hollow sphere and a ring are released from top of an inclined
- In which case positive work has to be done in seperating them?
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