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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the difference between arc and spark

ABB, Jindal,

2 6131

wat is d diffr btw shunt coil and trip coil in VCB?

NTPC,

2180

Why is remote backup preferred to local backup?

1315

1.why we are using metal oxide gapless block in lightning arrester,2.What is minimum and maximum rating of metal oxide blocks using in india

Areva,

1359

It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

2198

How much current will a 5 HP delta connected motor at no load will take?Is tat need a starter

GRB,

2 6137

What will be the resultant out put voltage when two different voltage rating batteries are vconnected in parallel? pls. answer with example if available.

1 2531

Wat will happen if R-phase of an alternator is connected to B- Phase of AMF panel fed from alternator

4 4266

how we are measuring the import and export power?

1 2649

how to identify conection leads of an unknown electric motor

1388

whats the application of voltage regulation? and whats the voltage regulation's device?

1257

why there is spacing between two rails in railway?

DS Group, RRB,

3 4411

how much percentage set in transformer diffrencialrelay

1 2496

Which type of DG need Netral Earthing?

Hyundai,

1 4124

Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.

1702


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How to work E.L.C.B and how to connect in circuit.

1321


What is meant by reactance voltage?

465


Why we are using only Dyn11 tranformer in distribution system but not using a Dyn1 in distributing system?why not and advantage and disadvantage in both

2146


why the active power flow of some line is increased when the active power of out is cut ?

1496


What is the Temperature to be set in Thermostat provided in Marshalling box of the Transformer / Motor.

2291






Please tell me the formulaes while designing a substation for power Calculations in designing a 33 KV Substation?????

1226


HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)

1364


dear all i am kumara now current working in electrical designing of control and relay panel i want learn some substaion design then any book are available. pls mention name and authour

1353


What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

589


Why use the vcb at high transmission system ? Why can’t use acb?

572


What id difference between power and energy?

483


how does WTI work ?

1298


What are the ratings of VCB, MCB, MCCB, SF6, ACB, and OCB?

913


What are the types of windings according to the construction?

460


During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP

1251