Hi
The company I work for is putting together a test to test new employees tech skills. I wanted to try and get some questions from you guys that may be beneficial to ask.
Much can depend upon what the job position requires.
A position for someone to do motor controls you would want to ask questions that pertain to motor controls, one of the most popular are the drawing of a simple start stop control circuit to drawing a complete reversing motor starter control circuit, as well as 9 lead dual voltage motor hook up WYE or delta 12 lead to me is a bit too much unless the job would require the knowledge.
But for a position of someone who might only do residential/light commercial, some of the good questions should be about code, theory, and circuit layout as well as how to save cost on designing a layout that will save in wire runs, also conduit bending knowledge is a good area to know.
one of the most common ones I always asked was to draw a circuit to switch a light from two location using 3-way switch's, then ask to draw the same but switched from 4 locations.
understanding derating is often a big issue with many who proclaim to know what their doing, many don't even know to use the 90? column for THHN or 60? for NM or SE or SER that often lead to over or under derating, another often missed area is 440, what size breaker and conductors should you run for an A/C unit with a minimum circuit of 22 amps and a max of 30 amps.
Generally I do a verbal interview in which I give some off the cuff questions just to see if a person is trying to BS their way into the job with little to no knowledge of electrical, it doesn't take me long to send the BS'ers on their way, if they do show some knowledge then I will give them a much more in depth test just to see how much they know and where they are at, because if I hire them I want to know what I can trust them to be able to do, if they they do show that they do have a good grasp of code and some theory, then I talk to them to see how open they are to learn more, you don't need to get people who think they already know it all and have closed their mind to learning more, this is an ever evolving field that requires people to always keep an open mind to learning new things and ways of doing them, nothing like getting someone that is going to do things their way no matter what any one says.
Basically you want to know what they really know or not know and your test/interview should be designed around this.