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Electrical Engineer Intern interview questions shared by candidates

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Electrical Controls Engineer Intern was asked...22 June 2012

Do you know what a PLC is?

professional learning community

How did you get into EE?

Did a project in high school where I made a calculator and always loved inventing, building, and doing projects in my garage when younger Less

Example of technical project, hobbies relating to major, career plans.

I discussed previous research experience and relevant club activities.

Infinite

IV curve of a diode

described the proper graph of

Asked me what MOSFETs were... and seemed surprised when I began explaining how they worked as opposed to what MOSFET stood for.

Metal Oxide Semiconductor Field-Effect Transistor

What you can give the company as added value?

Can not, and should be a capital increase

A schematic shows a BJT in a common-collector configuration with the collector tied to ground, the base attached to a signal source, and the emitter connected through a resistor to -5V. In between the emitter and resistor is one end of a 75 Ohm transmission line. The other end is attached to a 75 Ohm resistor that terminates it to -5V. The signal source is a step with an initial voltage of -5V and a step voltage up to 0V. Determine the voltage at the emitter before and after the step. Then, draw the path of the loop current when the voltage transient has traveled halfway down the transmission line. Then, determine the voltage at the terminated end of the transmission line just before and just after the transient arrives. Determine how much power is reflected by the termination.

The emitter voltages are -5V and about -0.8V, respectively, creating a 4.2V transient wave. As the time when the transient is only halfway down the transmission line, the current loop is from ground, through the collector and emitter of the BJT, into the transmission line, and back to ground at the halfway point of the transmission line where the voltage transient is. The voltage at the terminated end of the line is -5V and -0.8V, respectively. There is no power reflected from the load. Less

Can you describe your experience with AutoCAD?

I described how my schooling has not provided AutoCAD software but that I had used SolidWorks and could apply my knowledge and learn whatever I may need to. Less