A step down transformer is used on a 1000 V line to deliver 20 A at 120 V

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.

admin:

Related Questions

  1. A body, which emits radiations of all possible wavelengths, is known as
  2. A body has 80 microcoulomb of charge. Number of additional electrons in it will be
  3. At which place, Earth’s magnetism becomes horizontal
  4. A car wheel is rotated to uniform angular acceleration about its axis
  5. If R is the radius of earth, the height at which the weight of a body 1/4 of its weight