What type interview questions ask in Electrical technicians

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we need a ntpc previous papers

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what is the tolerance for the magnetic balance test conducted on the distribution transformer?

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for star delta connection,,why the contactor star not burn,when red,yellow and blue cable is looping.

2 Answers   Mahindra Water Utilities,

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what is the meaning of TRF

1 Answers   Khidmah,

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i want to know how to calculate the battery capacity based on the UPS . ex i want to run have one kva UPS Which should run 10 hours ? in that case how many batteries to be installed and what will be the AH Value .

2 Answers  

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what is the material use in bus bar & why.

3 Answers  

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How do you select a cable size(Cu&Al) for a particular load

10 Answers   Adhunik, BPCL Bharat Petroleum, Hiecon, TATA,

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What aturn on methods of scr?

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Can clean earth cable be considered as low current cable

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Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above

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what is the differnce between ac and dc?

5 Answers  

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