Which of the Following Statements Are Incorrect

question 18

Multiple Choice

Which of the following statements are incorrect?

• A) Ultrasonography uses high-frequency sound waves.
• B) CT scans have a higher resolution than radiographs.
• C) Magnetic resonance imaging (MRI)scans use ionizing radiation.
• D) Most invasive procedures provide some risk to the patient.

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Definitions:

Output Coil

A component in PLC programming that represents a physical output device and is controlled by turning it on or off within the program.

TOF

Stands for "Timer Off-Delay," a function in PLC programming where a timer starts counting when the input turns off.

Timer Off-delay

A timing function in control systems that keeps the output active for a predetermined time after the input signal has been turned off.

Output Coil

In programmable logic controllers (PLCs), an output coil represents a device or actuator to be controlled by the PLC's program.