Electrical Engineering Interview Questions
Questions Answers Views Company eMail

wwht is wave trap used in ht line

4 5420

why use celling fan wing is two or three ?

2 4016

How can we calculate the KVA rating of a Distribution transformer from its core details?

ABB,

1575

How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?

HAL,

1417

What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.

ABB, HAL,

3 8157

We use ungrounded DC system (220V/110V) for control and protection system in substations etc. Suppose we have long 2 core DC cables running from our DCDB in control room to the load (length of around 2 to 3 km). Do we need to protect these long DC cables from earth leakages or not? If yes how?

Siemens,

5 10197

explain in detail HV & LV bushing connection in power transformer (110 / 11 kv 16 MVA)

TNEB Tamil Nadu Electricity Board, wbsedcl,

6 17575

How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?

13271

When should I use earth leakage circuit breaker for incomer and when should I use it for each feeder seperately?

1 2938

How can I communicate with an Areva MiCOM P121 relay by RS485 port? In other word, which command can I send and what information can I have recieved? please send some refrences, please. thanks

3 9217

the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

6 5245

1.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.

Wipro,

1503

Can we operate a DG Set in paralell with Transformer ?

NDDB, Sobha Developers,

6 11225

what is the Connected Load (kW) or Contract Demand (kVA)of mahindra nasik plant??

8853

in flemings lefthand rule thumb indicate for....

APPSC,

2 4292


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Discribe type of fault in DOL and stardelta startor.

1781


how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .

1494


What is the previous name of Cox's Bazar

1442


Differentiate between real and apparent power?

634


how to calculate units consumption for a 12 hp motor /hr.

1014






What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load

1376


What is relation between transmission lines & Communication lines ?

1670


From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?

1291


Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

1272


sir i ve applied for hindustan petroleum and power grid india ltd..and the exams on feb 22.can you pls send model papers and tell how to prepare for those.i need to get into any of these for sure.....

1715


what are the stresses in circuit breakers ?

1490


How to select a cable size for particular load?

1299


if we have 320KVA Genset kindly advice how much load we can put it.

981


which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

1537


what is the AC Plant and how can do the work with parts and picture tell us 150 Tr

1521