In a control system, a summing point with two inputs A and B produces an output Y . What is the output of the summing point if both inputs A and B are positive?

Correct option is B

​​​In a control system block diagram, a summing point algebraically adds its input signals.

• If both inputs A and B are positive, they are added directly.

Hence, the output is:

Y = A + B

Subtraction occurs only if one input is marked with a negative sign.