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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the difference between arc and spark

ABB, Jindal,

2 7587

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

NTPC,

2782

Why is remote backup preferred to local backup?

2016

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,

1928

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.

3821

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

GRB,

2 7669

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 3566

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

4 6285

how we are measuring the import and export power?

1 4365

how to identify conection leads of an unknown electric motor

2080

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

1848

why there is spacing between two rails in railway?

DS Group, RRB,

3 6309

how much percentage set in transformer diffrencialrelay

1 3472

Which type of DG need Netral Earthing?

Hyundai,

1 5230

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.

2326


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?

2288


What is the Resposiblity of Electrical Utility Engineer

2893


Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.

1934


how to deside the capacity of chock for drive?

2013


how to determine Sq.mm size of finolex power cables.

1959


WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM

1954


What is the Surge suppresor? Why using in a UDB's and How it works?

2162


what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

3338


What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

2137


How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.

2089


What is ideal IR values for ground and neutral.

1719


Why electrical power generation and transmission done in 3 phase system not more than 3 phase ?

3020


Shall I use 40A semiconductor Fuses in 32 A SFU ? Frame size is same. What Happen if Fuses burn on SFU?

2080


What is the count of hvdc transmission lines in india?

1057


The SFC of an engine is 0.25 kg/kW hr. when the fuel used has a calorific value of 36000 kJ/kg. the thermal efficiency of the engine is

1906