Oklahoma Locksmith Practice Exam

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What is the correct setting on a meter for measuring VAC?

The correct answer is: V

The correct setting on a meter for measuring VAC, which stands for Volts Alternating Current, is V. When you are using a multimeter to measure AC voltage, you need to select the alternating current voltage setting, often represented by "V~" or "VAC" on the device. This allows the meter to accurately measure the RMS (Root Mean Square) value of the AC voltage present in the circuit, which is crucial for correct readings. The other settings are not applicable for this measurement; for instance, DC is used for measuring direct current voltage and Ohm is used for measuring resistance. These settings would not provide applicable values when trying to assess alternating current voltage, and therefore, they could lead to misinterpretation of the readings. Understanding the proper use of each meter setting is essential for effective electrical troubleshooting and measurement in your locksmithing practice.