Question 317Electricity/Electronics - Assistant Engineer70% to pass
In order to definitively determine whether or not fuse "1", shown in the illustration is blown using an on-line testing technique, across what points would you connect the voltmeter leads? Illustration EL-0062
AI Explanation
The correct answer is C) from the bottom of fuse "1" and the top of either fuse "2" or fuse "3".
To definitively determine if fuse "1" is blown, you need to measure the voltage drop across the fuse. By connecting the voltmeter leads from the bottom of fuse "1" to the top of either fuse "2" or "3", you can isolate the voltage drop across fuse "1" and determine if it is open (blown). The other options would not provide a direct measurement of the voltage across fuse "1" and would not conclusively indicate whether it is blown or not.
The other options are incorrect because they do not provide a direct measurement of the voltage drop across fuse "1" or would include the voltage drops of other components in the circuit, making it impossible to definitively determine the status of fuse "1".
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