At resonance the phase of the steadystate response Select on

At resonance, the phase of the steady-state response Select one: a. 10 degree b. 45 degree c. 90 degree d. 180 degree

Solution

Answer is C) 90 degrees

For low value of frequency ratio, phase angle tends to 0 degrees

At resonance, it is 90 degrees

At high frequency ratio, it tends to 180 degrees

These are all responses of single degree forced vibrations steady state system