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. The specific charge of a proton is 9.6×10⁷ C/kg. The specific charge of an alpha particle
  2. SI unit of permittivity is
  3. If emf induced in a coil is 2 V by changing the current in it from 8 A to 6 A
  4. A bullet loses 1/20 of its velocity after penetrating a plank.How many planks
  5. The maximum and minimum magnitudes of the resultant of two vectors