Question

A choke coil is neede to operate an arc lamp at 160V (rms ) and 50Hz. The arc lamp has an effective resitance of 5Omega when running of 10A (rms). Calculate the inductance of the choke coil. If the same arc lamp is to be operated on 160V(dc). What additional resistance is required? Compare teh power losses in both cases.

Answer 1

Explanation:

We know that

now please refer attachment 1

let Ra be the additional resistance required for operating the arc lamp with 160V DC source then,

now please refer attachment 2

AC power consumed by the arc lamp =Vrms Irms Cosϕ=Pac

now please refer attachment 3

Now DC power consumed by arc lamp

now please refer attachment 4

hope it helps you mark as brainliest please