Navigate

An electric lamp is connected to 220 V, 50 Hz supply. Then the peak voltge is

An electric lamp is connected to 220 V, 50 Hz supply. Then the peak voltge is

Options

(a) 210 V
(b) 211 V
(c) 311 V
(d) 320 V

Correct Answer:

311 V

Explanation:

Measurement of A.C voltage gives the rms values.
V(rms) = 220 V
Peak value Vm = V(rms) √2 = √2 (220 V) = 311 V.

AFMC2007
admin:

Related Questions

  1. For photoelectric emission from certain metal the cut-off frequency is v
  2. The velocity of a particle at an instant is 10 ms⁻¹.After 3 s its velocity will become
  3. An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform
  4. A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter
  5. In a mass spectrometer used for measuring the masses of ions, the ions