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Which of the following is/are the characteristic(s) of SFG?

77. Which of the following is/are the characteristic(s) of SFG?

1. There are nodes in the network which represent system variables, and direct branches connect them.
2. Diagrams representing equations are called SFGs.
3. The linear system is the only one that can be applied to it.
4. All of the above

Answer: D) All of the above

Explanation:

The following are the characteristics of SFG -

1. There are nodes in the network which represent system variables, and direct branches connect them.
2. Diagrams representing equations are called SFGs.
3. The linear system is the only one that can be applied to it.