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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
Related Questions: - For transistor action (1) Base, emitter and collector regions should have similar size
- In which of the following heat loss is primarily not due to convection?
- A 220 volts input is supplied to a transformer. The output circuit draws
- The number of NAND gates required to form an AND gate is
- A voltmeter of range 2 V and resistance 300Ω cannot be converted into ammeter
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For transistor action (1) Base, emitter and collector regions should have similar size
- In which of the following heat loss is primarily not due to convection?
- A 220 volts input is supplied to a transformer. The output circuit draws
- The number of NAND gates required to form an AND gate is
- A voltmeter of range 2 V and resistance 300Ω cannot be converted into ammeter
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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