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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

2127

Hi My Dear All Friends, There is one question it is widely used in Power Project's High Voltage Engineering. Question- What is the diffrence between Earth fault and Back up Earth Fault....???? . . . . . . Have A Good Day

1 3877

HOW BETTER VOLTAGE REGULATION IS OBTAINED BY HIGH VOLTAGE TRANSMISSION....?

Cummins,

1 4576

how to select battery for 15 KVA UPS with formula

2496

Disadventage of cable-gland earthing if any ?

2156

why dc series motor high speed motor

3 4897

how to calculate neutral current in three phase four wire system

Auto Meters,

1 4125

During Load testing of battery charger with temporary AC Generator .When reach 70% load Generator immediately shutdown .we could not able to Recognize ,what is exactly problem .Please kindly clarify us

1 3087

What should be the BDV value of a new transformer oil

3 7374

When we are working on transformer(132\11KV). we are going to isolate the transformer from both HV side and LV side. then we are applying grounding on both side. My question is that we required to isolate the VT which is still connected from secondary side.?

1 3956

i am iti student i have project to do. that IS 100MW 220\33KV SUBSTATION I WANT TO KNOW HOW TO START, LIKE CALCULATION, WHAT RATING OF CT,CVT, PT, ISOLATOR LIGHTING ARRESTER WAVE TRAP CIRCUIT BREAKER IN 22OKV SIDE, ALSO TO WARDS 33KV SIDE PLS HELP ME WITH THIS, THIS MY LIFE NOW, I KNOW AUTOCAD, I LIKE TO KNOW HOW TO CALCULATE ALL THE THINGS

3 5193

what's the activities of reactor in Buchholz relay?

Yahoo,

1 4408

CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?

3 5243

Why starters are using the machines???

Alstom,

5 8151

What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)

1847


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

2120


How to Prepare preventive maintenance shedule of machine tool.

1957


63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?

2678


how power is generated,and transmitted to our home..pls explain briefly in simple words.

2187


how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.

1920


1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating

1697


Can you any one explain application of buccholz relay operation and pressure relif device operation of power transformer

1805


state the working of discharge lamp?

1950


What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?

3483


In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??

2032


how to calculate insulation level of transformer?

1633


why tertiary winding is used in transformer with diagram?

2200


How I calculate the ELCB for circuit breakers?

2113


how we sesign the transformer give some specifion regarding design of transformers

1863


what is the difference b/w ground & virtual ground?

2264