Question

An dielectric current has both DC and AC components . DC component of BA and AC component is given as I = `6sin`omega`t. So `underset(rms)(I)` value of resulatant current is
A. 8.05 A
B. 9.05 A
C. 11.58 A
D. 13.58 A

Answer 1

Correct Answer - B
`underset(rms)(I)` = `sqrt (I)^(2)` = `sqrt (8 + 6 sin omegat)^(2)`
`impliesunderset(rms)(I)` = `sqrt (64 + 96(sin omegat) + 36(sin^(2) omegat)`
`implies` `underset(rms)(I)` = `sqrt 64 + 0 + 36 xx 0.5` = 9.05
`implies`Since, `(sin^(2)omegat)` = 0.5