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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
- When sound is produced in an aeroplane with a velocity of 200 m/s horizontally,
- If in a p-n junction, a square input signal of 10 V is applied as shown, then the output
- A light of wavelength 5000Å falls on a sensitive plate with photoelectric work
- The temperature at which the vapour pressure of a liquid becomes equal to the external
- A boy is trying to start a fire by focusing sunlight on a piece of paper using
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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