| ⇦ | 
| ⇨ |
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: - A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz.
- For transistor action (1) Base, emitter and collector regions should have similar size
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
- A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
- A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz.
- For transistor action (1) Base, emitter and collector regions should have similar size
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
- A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
- A potentiometer wire has length 4m resistance 8Ω. The resistance that must be connected
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