There has been a recent trend in the job interview process, the test. Multi-question, word problems, limited time, and possibly Scantrons await you at your next interview. With so many people out of work today, companies can be a bit more selective in their candidates. So, they're weeding out candidates for the people with the best memory via "the pop quiz." Even if you have 10+ year experience, be prepared to show your immediate knowledge and recollection of electrical analysis, math, word problem solving, and recitation of codes and regulations that you may boast familiarity with on your resume.
All is not lost though. A good old fashioned cram session is the solution. Just go over the basic formulas for the job you are applying for. Go over common combinations of formulas and analysis techniques, such as resistor and capacitor combinations in a nodal analysis. If you're feeling a little rusty in an area, better read as much in that area as you can. Know the definitions and properties of various basic components. (ie: FETS, diode types, etc) And be ready to draw examples of circuits you have designed or worked with in the past.
Following the actual written test, you may have to demonstrate your knowledge even further to the many staff members that pass you off to each other. So, the cram session will come in handy here too.
Quick example: A colleague of mine had a recent interview with a company that wasn't too big, around 100 employees. After the HR person gave him the standard introductory interview, the HR person hands him a Scantron and a number 2 pencil along with a test booklet. Given a set time to finish, that was followed by a 3 hour interview process. In the end they liked him, but his Scantron score didn't hit the mark. He admitted later that some of the questions dealt with formulas he usually just references. He said, "If I knew that was going to happen, I would have given the once over on the formulas."
He's not the only one I know who had to take a test. So if you have an up and coming interview, dust your books off, and get cracking!
Cabe