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Which of the Following Tools Is Used to Test Visual

question 11

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Which of the following tools is used to test visual acuity?


Definitions:

On/Off Control

A simple form of control using binary signals to activate or deactivate devices, without intermediate states.

Measured Variable

A specific quantity or condition that is monitored and measured in a process, such as temperature, pressure, or flow rate.

Set Point

The desired or target value for a controlled variable in a control system, against which actual values are compared to determine the need for corrective action.

Proportioning Action

A control method where the output is adjusted in proportion to the difference between the actual value and a setpoint.

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