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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 a bullet of mass 10 g and speed 100 ms⁻¹ penetrates up to distance 1 cm
- A parallel plate air capacitor has capacity C, distance of seperation between plate
- During mean life of a radioactive element, the fraction that disintegrates is
- If the length of a closed organ pipe is 1.5 m and velocity of sound is 330 m/s,
- A spring when stretched by 2mm containing energy 4 J. If it is stretched
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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