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Electrical Engineering Interview Questions
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How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend

 1623

what is the response time of relays when a FAULT OCCURS IN A POWER SYSTEM?

 2 4167

What is the role of power pack in substation protection system?

Facor,

2223

why there is a high voltage line in multiplication of 11?i.e.- -66kv,11,kv,22kv

Bhel,

4 7979

how capacitor pass ac voltage practically?with increase frequency and cpacitance?

DELL,

1 3917

What is battery Amphere-hour? How the battery back up time period is calculated?

 2 11273

What is Difference Between static & Dynamic Pressure of Fan & Blowers

 2 10268

WHY IS THE NO LOAD CURRENT SMALL FOR A TRANSFORMER COMPARED TO OTHER ROTATING ELECTRICAL MACHINES??

 1 3651

Three set (each phase contain 2 cable of 400 mmsq CU XLPE AWA) of single core cables are connected to 11 KV motor of 14 MW & the switch gear supplay is taken from 11kv feeder & this supplay taken from 275 KV substation. Problem is one pair cable(L3- 2 cable ) getting very hot & gland melted and damaged in switch gear side. the other two cable haven't any more hot(ambient temp only & L3 haveing 95- 100 Degree C. The same problem happened in 275 KV substation switch gear side also where the supply taken for 11 kv switch gear. But here L2 phese cable had problem. Why it is happening like this?. The cable having temperature different at different location from gland side inthe case of 11KV feeder of 275 kv substation. why ?

2 3539

What is the real function of reverse power relay in generator panel while syncronising?

Triveni,

1605

What is the Minimum winding resistance of motors ( small & big)? referance range

TATA,

1843

What is core CT & it's function?

 1625

A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?

 1519

A 6.6 KV/ 440V Xformer. what are the imporatant parts & equipment required for it's protection panel.

APTransco,

1838

what are the main Parts of VCB

 1 4508

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Un-Answered Questions { Electrical Engineering }

How can we select suitable capacity generator for three phase load (inductive load) and how to take study analysis in 3 three phase load system ?

1667

How to calculate the Efficiency of Chiller

2852

what is the importance of earthing system on the generators big capacity and small?

1310

what are the specifications we must look at to select a relay for any capacity motor?

1566

Why 3 phase induction motor getting supply in body if one of it's phase is cut

1270




What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.

1839

How much dc volt applied in cathodic protection system?

1838

how ct burden,magnetising current,ratio and knee point voltage are related & derived

1756

Why let through energy not considered for ACB breaker while cable sizing?

1864

What is the difference between line drop and percentage line drop?

1075

along with technical test papers

1136

Which type of air compressor is used now a days in the market. Keeping in mind of energy efficiency and maintenance points. Relevant documents may also be sent on mentioned email ids.

1241

how is the connection of a 3 phase ct trivector meter done on a pole mounted transformer

912

how to interlock 3 incomer-ACB,1 buscoupler ACB,... pls answer this question and if possible send me the ckt diagram..haifriends2910@gmail.com

2384

what is the size of cable for 15kw motor and 85 meter cable length using with vfd

1958

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