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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
- In the given figure, a diode D is connected to an external resistance R=100 Ω
- A ball of mass 2 kg and another of mass 4 kg are dropped together from
- Radiofrequency choke uses core of
- which of the following can not be emitted by radioactive substances during their decay?
- The potential energy of a 1 kg particle free to move along the x-axis is given by
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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