Electrical Engineering Interview Questions

I WANT YHE TECHNICAL AND ELECTRICAL SPECIFICATIONS OF 2x4MW 11KV 2x10MW 11KV 2x25MW 11KV 2x100MW 11KV HYDEL POWER PLANT i.e PROTECTION SYSTEM,MONITORING,CONTROL SYSTEM,GENERATION,SYNCHRONISATION,METERING PLEASE SEND THE DETAILS TO MY MAIL ID SPRAVEEN_222@YAHOO.CO.IN

809

Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

853

how can we decide where we have to DYn11 or other vector group transformer

24043

What is polarisation index value?.(pi value) Simple & brief definition of polarisation index?..

12734

What is the field weakening mode of a ac motor?

L&T,

1138

Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB

1515

What is an Air COmpressor

DLF,

999

what r Grid stations?what r there role.Explain in detail

956

explain how the power is distributed from a power plant to a consumer.explain step wise in detail

2521

what r substations?what r there work?why voltages r incresed and then reduced during distribution of power

723

The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason

1204

* Signal transmission in sky wave propagation is due to ? a) Reforction of wave b) Reflection of wave c) Pierus through Inosphere d) None and Reason for this is????

3722

Single line diagrams for star to delta and DOL starters.

1046

what is bus duct and what is differance between bus duct and bus bar

35741

in gen traf what is ONAN , ONAF , OFAF and DYN

6499

Un-Answered Questions { Electrical Engineering }

How to size Air Circuit breaker (ACB)? What is the most important factors?

840

Why is it prefer to initiate circuit breaker failure by "86" lockout relay not by "94" tripping relay ?!

553

Dear Sir I am living in Jaipur Rajasthan  now I did complete my b tech degree in electrical engineering in 2012  Sir how I gate certificate of competency for electrical supervisor

849

why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?

679

i have flexible wire. size of conductors is 0.190 mm & no.of conductors are 48. then size of wire comes 1.37 sqmm instead of 1.5 sqmm . the what is tolerance for this size.

638

can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

695

What do you mean by Frame 5 Gas Turbine as well as Mark II.

1297

what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW

5884

what are inherent currents?

850

Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

1093

After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.

1109

Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?

1909

Witch do depand of Power factor and theory of power factor?

913

What is servo motor and what are different types of servo motor

1139

what is vA rating and class of a ct.

674