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ABC Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Which is the best between SCADA & PLCC & Why ?

2 7313

what are tpes of insulaors& its uses

1 1640

What is the Good Earth resistance value of G.I & Cu. Chemical Earthing & Normal Pipe Earthing?

892

we have 3 phase 4 wire supply 230/415 V.AC and our distribution is single phase or we have all single phase 220 v,ac operated appliances. and noted the current with help of clamp meter Red to N = 20 Amps. Yellow to N = 45Amps and Blue to N = 30 Amps ( total is 95 Amps ) what will be neutral current on the main .

1 3203

I NEED THE CABLE SIZE. I=800A AND P=315KW

2 2898





What will happen if 2 phase supply is given to 3 phase motor?

4 3260

For backup batteries connection,which method is best? series or parallel ?  

3 4367

What is difference between Over Current & Earth Fault protection?

715

What is meant by shunt current?

1 1245

How to size Air Circuit breaker (ACB)? What is the most important factors?

705

When to use Oil Transformer type and When to use Dry type? What is the difference between both?

2 2255

Double Busbar Scheme for outdoor switch yard system (132kv) step up power plant Hi friends 1. in this system both busbars energized all the time. 2. what is the meaning of main BB and transfer BB, 3. step up transformer connect main bus bar all the time or both BB connected through DS switch . 4.bus sectionalization means ? thank you.

1 777

1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.

660

what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks

545

While miss missed name platform fo electric motor how to calculate simple fourmul,?

1 794

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Un-Answered Questions

Transmission through a short line depends on

740


In the definition of mutation we say sudden heritable change i the DNA, so what does sudden means here?

141


How I can Compare 120v/60Hz versus 220v/50Hz ? Please tell me both advantage and disadvantage ......

658


1.Z transform always lies around ? a) origin b) pole c) zero d) z=1. Multiples Mcqs which is bother me can’t find answers on internet. Some help required with little explanation . Note: this is not homework or related to any test. Thanks

740


hi, in the event earth grounding is not available in a project, is there any other way to make the elcb work? fyi, i have an instant water heater (6.5kw) installed, however if there is grounding in the heating element inside the heater assembly, i will get grounded. thank you in advance to those who will answer my question.

669






what is sox and sod in sap ?

283


What is the previous name of Cox's Bazar

588


What is the Coefficient-of-variation?

198


how much efficiency loss will tool place in a steam turbine due to low vaccum?

681


What is process model?

639


how can you convince me that you can do a sales job even though you don't have any sales experience.

968


How can calculate the rating of a servo stabilizer for given a specific load

2037


What is standard data type and what is user defined data type?

891


what is the minimum velocity of cooling water for maximum efficiency of condensor.

893


Why does Oracle not permit the use of PCTUSED with indexes?

1503






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