Maintenance Engineer Interview Questions


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Senior Maintenance Engineer was asked...June 2, 2014

Is 3,599 a prime number? Yes or No. Explain.

10 Answers

3599 = 3600-1 = 60^2 - 1^2 This is known as "difference of two squares" Which factors into (60-1)*(60+1) Therefore factors are 59 and 61 A longer, more general method is to say that you only need to check primes less than the square root of 3599, which again because its 60^2 - 1 you can just try primes less than 60. Less


3600 = 60^2 Sqrt(3600 - 1) = 60 -/+ 1 >>> 59 x 61

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why Halliburton?

7 Answers

Immediately, i got a call from them next day... If u didn't get get a call from them within 2 days.. then u r disqualified from the selection process Less

Hello, anybody have an idea about this opening "Associate Technical Professional Field Drill Bits and Services" ? I'm confused which openning I should apply for! Less

im fresh graduated civil engineering , i'd like to work for halliburton , which courses should i take or what should i do ?! i need advise and thanks for interesting Less

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1-where is my home? 2-what is my education? 3-what is my experience , soft skills and languages?

5 Answers

3year8month my experince

Hindi English languages


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Tell abt urself

3 Answers

I am nafis ibrar frome india but now in Qatar continue work i have 3 years electrical engineering diploma Education complete after continue work have experience Less

I am work in india electrical maintenance department Tata steel my near this plant Less

Briefly explained

PAK Arab Refinery

Are you going to leave the company?

3 Answers

only if i learned enough from your company and its time to leave the company.

Yes only if I do not find job security and future growth opportunities.

Not if you pay me more :)

MRF Tyres

Are you ready to relocate anywhere in India?

3 Answers




Simhapuri Energy

why in transformer oil is used?

3 Answers

In order to insulate and to provide cooling to the windings we use transformer oil. Transformer oil has very high breakdown voltage so that it does not breakdown inspite of having high voltage coils around it. When transformer works on high load its winding temperature increases hence oil temperature also increases which then cooled through the cooling tubes having contact with outside air. Less

Cooling purpose , transformer oil is insulation oil also

Called as also insulation oil and this is stable at high temperatures.


Tell me about a time you are face with a difficult situation, How did you solve it? Given a room with 3 light bulbs which have their respective three switches (On/Off) outside the room. You don't know which switch corresponds to which light bulb. You can do whatever you want with the switches but you can enter the room only once. How will you find which light switch corresponds to which light bulb?

3 Answers

Turn them all on!

If you take one at a time once there there on remove one wire or off but you have to turn power on again you should find which switch belongs to the bulbs. Less

I talked about my past experience

are you willing to accept a lower salary than we advertised

3 Answers





What is turbocharging

2 Answers

Supplying charge air at a higher density than the atmospheric pressure to the engine Less

Its compress air for intec valve and air prihiting

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