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Electrical Engineer Interviews
People come up with peculiar or funny answers in interviews.Interviewer: Why is a thicker conductor necessary to carry a current in A.C. as compared to D.C.?
Candidate: An AC current goes up and down (drawing a sinusoid) and requires more space inside the wire, so the wire has to be thicker.
Interviewer: How will you tell if that wall outlet carries AC or DC?Candidate: I will put my finger in. If it is pushed away, it is AC. If it gets stuck, it was DC.
Interviewer: How will you reverse direction of an induction motor?Candidate: I will remove the four bolts at the base, turn the motor around, and put back the bolts.
Interviewer: How do you start a synchronous motor?Candidate: Vrrrrrrrmmmmmmmmmmmmmmmmmmm (in rising pitch)
Interviewer: Stop! Stop!
Candidate: rrrrrrrmmmmmmmmmmmmmmmmmmmm (in falling pitch)
Interviewer: How do you limit surge current within an integrated circuit?Candidate: By using a miniature circuit breaker.
Interviewer: "Why does a capacitor block DC but allow AC to pass through?Candidate: See, a capacitor is like this ---] ]--- , OK. DC Comes straight, like this ----------, and the capacitor stops it. But AC, goes UP, DOWN, UP DOWN and jumps right over the capacitor!"
Interviewer: "What is a step-up transformer?"Candidate: "A transformer that is put on top of electric poles."
Interviewer: (smiling) "And then what is a step-down transformer?"
Candidate: (hesitantly) "Uh - A transfomer that is put in the basement or in a pit?"
Interviewer: (pouncing) "Then what do you call a transformer that is installed on the ground?"
(student knows he is caught -- can't answer)
Interviewer: (impatiently) "WELL?"
Candidate: (triumphantly) "A stepless transformer, sir!"