Question

the meter is set - up and connected for testing mv, but an ol reading is displayed. to correct this situation technician a states the rel button should be pressed. technician b states the range button should be pressed. who is correct?
technician a
technician b
both technician a and technician b
neither technician a nor technician b

Explanation:

An "OL" reading on a meter usually indicates an open - circuit or out - of - range condition. Pressing the REL (relative) button is not the correct way to address an out - of - range issue. Pressing the RANGE button can adjust the measurement range of the meter, which is a proper step to take when an "OL" reading is displayed due to an inappropriate range setting.

Answer:

Technician B