Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

2489

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 2178

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

Reliance, KOC, Daikin,

6 34428




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 47517

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

Grasim,

1606

Selection criteria for Vector group in power / distribution transformer.

ABC,

1 6251

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 7017

what is the different between DC & AC load Line.

Emarat,

1 4669




tell me about vfd

8 5489

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

Bhel,

11 7837

how to calculate the multiplication factor in HT incomer trivector meters

Dalkia, Gujarat Energy Transmission Corporation Limited GETCO, Getco,

8 50774

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

DLF,

6 16164

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

848

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

CPCL, IOCL,

13 40736

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

2 2779


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Un-Answered Questions { Electrical Engineering }

Difference between HRG and NGR. Are they both the same thing

1941


Load transfer in 11kv double busbar switchgear - operation.

685


What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

1015


what is a types of short circuit and what is a types of distance protection tests

942


I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR

756






Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

173


please explain to me how to calculate current,voltage,resistance with formula??

188


induction 3 phase motor terminal connection

1289


What is creepage distance..... what will be the value for different voltage level

772


In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?

788


We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

200


Circuit diagram of tube light without starter using electrical choke

2650


What is negative sequence over voltage element?

617


Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA

648


WHAT IS THE TOTAL POWER GENERATION IN CHHATTISGARH?

728