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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
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A parallel plate condenser has a uniform electric field E(V/m) in the space between
- A boat of anchor is rocked by waves whose crests are 100 m apart and velocity
- The transition from the state 3 n = 3 to n = 1 in a hydrogen like atom results
- In Young’s double silt experiment if the distance between the two slits
- A capacitor of capacitance value 1 μF is charged to 30 V and the battery
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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