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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 70 kg man stands in contact against the inner wall of a hollow cylindrical drum
- When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm
- For a wave propagating in a medium, identify the property that is independent
- Electric potential at any point is V= -5x +3y + √(15) z. Then the magnitude of electric
- A body is thrown vertically upward in air when air resistance is taken into account
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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