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 man weighing 60 kg climbs a staircase carrying a 20 kg load on his hand
  2. A lead bullet of 10 gm travelling at 300 m/s strikes against a block
  3. If alpha, beta and gamma rays carry same momentum, which has the longest
  4. A body of mass 0.25 kg is projected with muzzle velocity 100 m/s from a tank
  5. A heavy nucleus at rest breaks into two fragments which fly off with velocities