Electrical Question: What are the basic properties of Signal Flow Graph? | CONTROL SYSTEMS LAB VIVA

The basic properties of the signal flow graph are:
Signal Flow Graphs are applicable to linear systems
It consists of nodes and branches. A node is a point representing a variable or signal. A branch indicates the functional dependence of one signal on another
A node adds the signals of all incoming branches and transmits this sum to all outgoing branches
Signals travel along branches only in a marked direction and is multiplied by the gain of the branch
The algebraic equations must be in the form of cause and effect relationship

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