Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to Make relay co ordination chart for a Electrical power distribution of a plant

3262

sir please tel me how calucalte kwh if home taken load 30ams how maney kwh taken per day.and 3phase motor 5hp per hars how maney load teken and how mach kwh and forward me to electrical table for calicalte kwh and kvr and kvah

1 3272

how to calculate the current if i know power in MW and voltage 11kv/415v and also want to know that incoming cables for trnsformer

Daikin, KOC, Reliance,

6 44228

How to calculate unit consumption on the basis of load. kWH=kwXhrs.is it correct? kw is motor load.What is unit consumption at 100% load, 50% load & on no load.

GIL,

6 52935

How we can calculate the consumption in kwh of motor on basis of kw @100% load, @50% load & @ no load.

Grasim,

2323

Selection criteria for Vector group in power / distribution transformer.

ABC,

1 7592

If load is 240 kw & pf is 0.8 lagging, than how to increase it from0.8 to 1.0(unit),which rating capacitor used, please give me Calculation. What is effact of consumer & suplier if pf is lagging or leading with on effect machines/ TF/GE etc.

L&T,

6 10597

what is the different between DC & AC load Line.

Emarat,

1 5959

tell me about vfd

8 10264

Suppose am having the PF value .8, so how can we say that is it lagging or leading?

Bhel,

11 12267

how to calculate the multiplication factor in HT incomer trivector meters

Dalkia, Getco, Gujarat Energy Transmission Corporation Limited GETCO,

9 69851

HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL STARTER? & in dol why it is require circuit breaker?

DLF,

6 19986

What is rms value wher it is used??????????

1 4147

How do you reverse the direction of rotation of a FAN?

CPCL, IOCL,

13 50452

how can we rotate a single phase motor (without cap.)in reverse direction?

2 4264


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Un-Answered Questions { Electrical Engineering }

what is a reactive power? what is the relation with power factor?

1628


What is the test block protection relay if any body know plz explained

1000


Grid fault level [KA]?

2195


What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.

3005


why u r living from presentaly working.

1939






What is the Resposiblity of Electrical Utility Engineer

2401


if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

1512


What are the different methodes for calculating the short circuit Current?

1491


What is the restart inhabit setting in ABB spam150c relay (Motor protection relay)

3018


Parts of machine and their discription in details with suitable photo

1619


How vfd saving power.

1518


HOW TO CALCULATE S/C,O/C,E/F OF ACB.

2129


what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA

2302


What is oscillator circuit?

667


why it is not advisable to run low rating (19KVA) DG sets in parallel for long durations even though they are provided with droop ckts (QDC)

1453