Navigate

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.

AIIMS2012
admin:

Related Questions

  1. The momentum of a body is increased by 20%.The percentage increases in kinetic energy
  2. The dimensional formula of Plancks’s constant and angular momentum are
  3. A beam of light contains two wavelengths 6500Å and 5200Å.
  4. If the self inductance of 500 turn coil is 125 mH, then the self inductance
  5. what is the de-Broglie wavelength of the electron accelerated through a potential