If the selector is in the 600 DCV position, what is the correct voltage?

The correct voltage when the selector is in the 600 DCV position is 600 VDC. This is because the selector position directly indicates the measurement range it is set to. Therefore, if the selector is indicating 600 DCV, this means it is calibrated to measure voltage levels up to 600 volts in a DC circuit.

The information regarding other voltage levels in the options will not be applicable as the selector being set to 600 DCV designates it specifically for measuring the voltage at that level. In practice, this means that if a voltage reading is taken while the selector is at the 600 DCV position, the highest expected voltage that can accurately be measured is 600 volts. Thus, the evaluation of voltage is predictable based on how the device is configured in that specific setting.