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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 uniform chain of length L and mass m is kept on a smooth table. It is released
- A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 secs
- A body rolls down a stair case of 5 steps. Each step has height 0.1 m and width 0.1m
- A train moving at a speed of 220 ms⁻¹ towards a stationary object
- A particle is released from rest from a tower of height h, i.e,t₁ : t₂ : t₃ is
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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