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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: - A galvanometer coil has a resistance of 15 ohm and gives full scale deflection
- A Carnot engine, having an efficiency of η=1/10 as heat engine, is used
- In a P-N junction
- Water rises in a vertical capillary tube up to a height of 2.0 cm.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A galvanometer coil has a resistance of 15 ohm and gives full scale deflection
- A Carnot engine, having an efficiency of η=1/10 as heat engine, is used
- In a P-N junction
- Water rises in a vertical capillary tube up to a height of 2.0 cm.
- Two balls are dropped from heights h and 2h respectively. The ratio of times
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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