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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.
Related Questions: - Two particles P and Q start from origin and execute simple harmonic motion along X-axis
- In which case positive work has to be done in seperating them?
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two particles P and Q start from origin and execute simple harmonic motion along X-axis
- In which case positive work has to be done in seperating them?
- The photoelectric threshold frequency of a metal is ν. When light of frequency 4ν
- Which one of the following statements is not correct in case of a semiconductor?
- Calculate the charge on equivalent capacitance of the conbination shown in figure
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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