| ⇦ | 
| ⇨ |
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 maximum number of possible interference maxima for slit-seperation equal to
- Which of the following phenomena support the wave theory of light?
- A thermocouple is made from two metals, antimony and bismuth. If one junction
- Spectrum of X-rays is
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The maximum number of possible interference maxima for slit-seperation equal to
- Which of the following phenomena support the wave theory of light?
- A thermocouple is made from two metals, antimony and bismuth. If one junction
- Spectrum of X-rays is
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
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