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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
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A radioactive substance decays to 1/16th of its initial activity in 40 days.
- A wire mesh consisting of very small squares is viewed at a distance
- When you move from equator to pole, the value of acceleration due to gravity (g)
- The magnetic lines of force inside a bar magnet
- The mirrors are inclined at an angle of 50⁰. The number of images formed for an object
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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