> One of my "standard" interview questions for the young ones is a simple
> voltage divider. 5 volts in, a 4k and a 1k resistor. Last time I used the=
 guy said
> 7volts......

Huh? Like to see the logic for that.

As to suitable questions, as why a twisted pair is used to connect a sensor=
 over a distance. Similarly (or variant thereof) ask why a balanced line is=
 used.

--=20
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