Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to model two generators into a single generator ? Eg. two generators connected to a bus, would like to model it as a single generator connected to a bus.

1477

how is efficincy of the transformer is predermined

3 6196

what is multiplying factor of a energy meter connected with a CT ratio of 600/5 and voltage at 415 volts.

1 7121

i need to connect fact device(any one from following upsc,sssc,svc,statcom and tcsc)in 14 bus system....by using MATLAB psat software....if i connect these fact devices,i will get some error as "virtual error"...i cnt rectify this error.if anybody know that how to work in psat,pls help me to rectify this error.... or send mail me to, viki0607@yahoo.co.in

1 3611

how to prepare the technical test

RRB,

1624

for a 132/33kv transformer secondary is star and is connected to NER. and from secondary a cable is running to 33kv swbd. since the cable is single core do i have to run neutral cable also to 33kv swbd.???

PowerTech,

5 8765

how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?

Bhel, Jai Balaji, Rashmi Group,

1664

What will be the effect of circulating current in HT xlpe cable when both the armour ends are grounded. Will the termination fils after some time in case of 33 kv supply.

1638

Explain the operation principle, advantages and disadvantages of the following converters: a) A 12 pulse converter b) A Switch-mode inverter c) A thyristor inverter

1503

The principle of switching circuits for different types of batteries in application of storage systems

1533

Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC

1589

How to improve fuel cell in a distribution system?

1531

which one cable has a more resistance.A big or small

2 3930

what is the use of the puls transformer in UPS & how it works???????????

1670

What is the use of IGBT in UPS & its working??????????

Reliance,

5 23860


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Un-Answered Questions { Electrical Engineering }

How to select, design,size & calculate for 11 KV/33KV/66KV/132KV/220 KV/440 KV circuit breaker for HT side of transformer protection/HT distribution protection?

2303


why would amp draw on neutral wire be as much as amp draw on the hot leg.

1653


Connection diagram for KW meter and  Kva meter

1793


WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?

1511


Write a note on materials used as a fuse element.

1700






how to calculate the formula of cable size if motor kw is given

1696


is there any current and voltage drop on liquid resistance starter water/soda tank ?

1493


What is force on parallel conductors ?

653


Saving in copper achieved by converting a 2 winding transformer in to an auto transformer is determined by A voltage transformation ratio B load on secondary C quality of core material D size of transformer core

2501


Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..

1653


I have a situation to design sub-Distribution board/Panel meant for feeding power sockets. In the incomer CAN i Take TP MCCB with Neutral Link and All the outgoing feeders with to sockets with TP MCCB and Neutral Link? P.S : My System is IT Earthing

1323


Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar

1489


Why are the cores of large transformers built up of circular transactions ?

1566


how you taken aotitude test

2032


What is acsr cable and where we use it?

722