What is the correct voltage reading if the selector is in the 150 DCV position?

In the context of measuring direct current voltage, if the selector is set to the 150 DCV position, it means that the measuring device is configured to accurately read voltages up to 150 volts. The correct voltage reading during this period will depend on the actual voltage present in the circuit being measured.

The presence of an actual measurement of 60 VDC indicates that this voltage is below the maximum range of 150 VDC. This reading is valid and reflects a proper measurement consistent with the device's capability to measure voltages within its range. Therefore, if the circuit is indeed delivering a voltage of 60 VDC and the selector is correctly set to the 150 DCV position, then this reading can be considered correct.

The other value readings, such as 150 VDC, 75 VDC, or 120 VDC, would only be accurate if the circuit voltage being measured corresponds with those specific voltages. Since only one specific reading can be valid at a time in practice, it is crucial to select the correct actual measurement from the available choices.