Navigate

The power factor of an AC circuit having resistance R and inductance L connected

The power factor of an AC circuit having resistance R and inductance L connected in series to an AC source of angular frequency ω is

Options

(a) zero
(b) ωL/R
(c) R/√R²+ω²L²
(d) R/ωL

Correct Answer:

R/√R²+ω²L²

Explanation:

power factor, cos ɸ = R / Z = R / √[R² +ω²L²]

UP2013
admin:

Related Questions

  1. In an ac circuit an alternating voltage e = 200 √2 sin 100 t volts is connected
  2. To get three images of single object, one should have two plane mirrors at an angle of
  3. When temperature of an ideal gas is increased from 27⁰C to 227⁰C,
  4. The power obtained in a reactor using U²³⁵ disintegration is 1000 kW
  5. Element ²³⁴U has 92 protons and 234 nucleons in its nucleus. It decays by