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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.

Allied Group,

1710

How do I calculate a WTI CT ofa 1250kVA 6600/400V transformer

1715

why the perameters of secondary circuit are more important then that of the primary circuit of induction motor?

1865

If the earth is a good conductor of electricity, why don't people get shocked every time they walking on earth?

Reliance,

1749

how to check the LRS resistance .......................

1 3731

along with technical test papers

Vee Technologies,

1572

what should be correct gas pressures to be a 1.5 ac unite

DDK,

1447

How can we calculate cable size in Low voltage & high voltage

United Breweries UB,

1558

What is the main purpose of relay?

1 2399

completed BE & done apprentice at tneb & having experience 6 years. want to get c license. will apprentiship & BE be helpful for getting c license. will i get any preference by showing this?

1624

for opening electrical shop, tips needed.

1790

Form S and "c" license application both are same? @ tneb portal

1796

I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

Elmaco,

1900

what is the difference between b c d curves on mcb

1768

i have to install a HT panel, what components, I have to use in this and what will the diagram of that diagram,please tell me each and everything.

1770


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

1886


How much ph is maintained of water electrolyte which is used in LRS for 1200 kw slipring induction motor ?

1723


Why need 3phase machine double earthing?

1733


we have a 2.5hp Starite electric motor water pump,the elec motor burned out,we need to replace starting capacitor(old capacitor specs erased),what microfarad rating capacitor do we need? 110-125V

1828


Are Refrigerators & Deep Freezers the Inductive load ? How to calculate the Power Factor & hence the Output Power for them ?

5070


I completed iti in2004 I was worked in A grade contractor can I get c licence

1676


where solid grounding and where grounding through ngr done and why?

2528


Is there any guideline say about display of earthing value near to earth pit

1168


What is superposition theorem?

1143


Explain Even and Odd signals?

1860


Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2

1823


how to increase or decrease speed in DC shunt motor by DC convertor

2243


What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?

2598


Determine the BTU size of an aircon for 20 sq metre room

1836


explain wiring system

2523