The rms current in an AC circuit is 2 A. If the wattless current be √3 A,

The rms current in an AC circuit is 2 A. If the wattless current be √3 A, what is the power factor of the circuit?

Options

(a) (1/2)
(b) (1/3)
(c) 1/√3
(d) 1/√2

Correct Answer:

(1/2)

Explanation:

We know that, Iwʟ = I(rms) sin ɸ

⇒ √3 = 2 sin ɸ or, sin ɸ = √3 / 2 ⇒ ɸ = 60°

So, power factor = cos ɸ = cos 60° = 1 / 2

admin:

Related Questions

  1. The barrier potential of a p-n junction depends on
  2. A concave mirror of focal length f₁ is placed at a distance d from a convex lens
  3. The drift velocity of the electrons in a copper wire of length 2 m under
  4. When temperature of an ideal gas is increased from 27⁰C to 227⁰C,
  5. An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform