Rule 5. Determine the angle of departure (angle of arrival) of the root locus from a complex pole (at a complex zero) need to modify for positive feedback system as we can see here.[img=291x143]17869cad4bc6f6e.png[/img]
A: 对
B: 错
A: 对
B: 错
举一反三
- Determine the asymptotes of root loci must be modified for positive feedback system. The angle of asymptotes will be as like this.[img=413x53]17869cad2b67b83.png[/img] A: 错 B: 对
- The characteristic equation of positive feedback system is 1-G(s)H(s)=0 or, G(s)H(s)=1. Thus, the angle condition can be described as like this.[img=718x52]17869cad0e8ba2b.png[/img] A: 错 B: 对
- The cantilever beam shown here is subjected to two equal and opposite couples，for the section B（ ）.[img=414x136]1803a25c3173b7f.jpg[/img] A: The deflection is zero, the angle of rotation is not zero B: The deflection is not zero, the angle of rotation is zero C: Deflection and angle of rotation are both not zero D: Both deflection and angle of rotation are both zero
- In order to determine the slope and displacement of a beam by integration, it is important to use the proper signs for M, V or w. Positive deflection v is ( ) and as a result, the positive slope angle [img=9x19]17de8338539dd00.png[/img] will be measured ( ) from the [img=11x14]17de83385e83d59.png[/img] is positive to the ( ). A: upward, counterclockwise, right B: upward, counterclockwise, left C: downward, clockwise, right D: upward, clockwise, left
- From here, we can see the bridge ________ construction．