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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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- Two point charges +2 coulomb and +10 coulomb repel each other with a force of 12 N.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A cord is wound round the circumference of wheel of radius
- Two point charges +2 coulomb and +10 coulomb repel each other with a force of 12 N.
- A particle executing simple harmonic motion of amplitude 5 cm has maximum
- An explosion breaks a rock into three parts in a horizontal plane
- The half-life period of a radio-active element X is same as the mean life time
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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