Automatic Control Systems - Engineering

Q1:

In the given figure the input frequency is such that R << Xc, then

A v0 lags vi by 90°

B v0 leads vi by 90°

C v0 and vi are in phase

D either (b) or (c)

ANS:A - v0 lags vi by 90°

Voltage across capacitor lags by 90°.