Which of the following statement is correct regarding polar plot?
1
The polar plot of a transfer function G(jω) is the plot of the magnitude of G(jω) versus the phase angle of G(jω) as ω is varied from negative infinity to positive infinity.
2
When a zero is added to a system the polar plot end point will shift by -90°
3
When a pole is added to a system the polar plot end point will shift by + 90°
4
For an all pole minimum phase system the order of the system determines the quadrant at which the polar plot ends.
5
Question Not Attempted