Energy interview questions | Glassdoor

# Interview Questions

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## Interview Questions

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Apr 7, 2013
 The coding test was difficult. They give very little time and you need to produce the correct output. This is to see how you perform under pressure.3 AnswersWhat kind of coding Question they will ask? any tips?What kind of coding Question they will ask? any tips?Any input on the short answer qustions?

### Associate Electrical Engineer at San Diego Gas & Electric was asked...

Jul 31, 2013
 What is the tertiary winding of a transformer used for2 Answersi was like WHAT I WAS ONLY TAUGHT 2 WINDINGS!!The tertiary winding is sometimes used in high power transformers. Can be used to redirect fault current or power an aux load. Usually connected in Delta.

### Supply Chain Analyst at Schneider Electric was asked...

Feb 23, 2014
 How many times do you need to pick 1 pair of socks from 50 white and 50 black?3 Answers2 or 31The answer is 3. I also interviewed here and the question states that you are in a dark room and cant see the socks that you are picking, how many do you need to pick before you are guaranteed to have picked out a pair

### Process Engineer at Amec Foster Wheeler was asked...

Apr 28, 2010
 You are revamping a petroleum refinery and the expected flow is 2 x its original volume rate. What is the expected pressure drop as a multiple of the original design.2 AnswersPressure drop is proportional to the change in velocity squaredThe pressure drop rises 4 times

Jun 29, 2010

### Investment Analyst at DC Energy was asked...

Mar 31, 2010
 how many zeros are at the end of 100!3 Answers224. Count all multiples of 5, so 100/5=20, and multiples of 25(give you an additional 0) 100/25=4. This means 24 zeros. All other explanations are basically complicated ways of this fact.An elaboration of the above: You are looking to build ten's since each time ten is multiplied by ten, the number of zero's increases by one. The prime factorization of ten is 5*2. In 100!, the determining factor in the number of ten's you can build is the number of fives (since two's are plentiful)...hence you are counting the number of fives in the prime factorization of 100!

### Power Plant Operator Trainee at Dominion Resources was asked...

Jul 22, 2013
 At atmospheric pressure, at what temperature in degrees celsius does water freeze? Many people get this wrong somehow.3 AnswersZero.Zero degree celcius0

### Operations Specialist at SolarCity was asked...

Dec 16, 2011
 What is the unit of measurement for natural gas?2 AnswersTHERMNatural Gas is usually measured in cubic feet. You also hear the term "therm" which equals the energy in approx. 100 cubic feet of natural gas.

### Equipment Operator at Exelon Generation was asked...

Mar 23, 2015
 Describe a time when you worked with a team to accomplish a task.1 AnswerTalked about engineering classes taken in college

### Postdoctoral Researcher at National Renewable Energy Lab was asked...

Aug 14, 2013
 It was pretty standard hybrid between an academic and a regular job interview. I don't remember any particularly hard questions1 AnswerI studied the project beforehand which I think got me the job.
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