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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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- A piece of marble is projected from the earth’s surface with velocity of 50 m/s
- The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The phase difference between the flux linked with a coil rotating in a uniform
- A piece of marble is projected from the earth’s surface with velocity of 50 m/s
- The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
- Reactance of a capacitor of capacitance C µF for A.C freqency (400 / π) Hz is 25 ohm
- A charged particle of mass m and charge q moves along a circular path of radius
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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