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A step down transformer is used on a 1000 V line to deliver 20 A at 120 V at the secondary coil. If the efficiency of the transformer is 80%, the current drawn from the line is
Options
(a) 3A
(b) 30 A
(c) 0.3 A
(d) 2.4 A
Correct Answer:
3A
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Alternating Current
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Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Monochromatic light of frequency 6.0 x 10¹⁴ Hz is produced by a laser. The power emitted
- Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing
- λ₁ and λ₂ are used to illuminate the slits. β₁ and β₂ are the corresponding fringe
- A train moving at a speed of 220 ms⁻¹ towards a stationary object
- If white light is used in Young’s double slit experiment
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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