Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why 6.6,11,22,33,66kv? what basis they have considered?

5 3742

HOW CIRCUIT BREAKER RATING CALCULATED?WHAT ARE THE PARAMETERS CONSIDERED?

5 11408

Wat is da difference b/w neutral earthing and unearthed system?

2 2915

what is the purpose of NGR?

Assam Electricals,

25 65735

what is residual current....

1 1591

what happen "when Dyn11 is parallel operation with Dyn1"?

9 9619

Grid fault level [KA]?

648

Earth Resistivity

2 2987

on what priciple transformer works on?

5 2885

how to calculate the capacity of the AC motor

TATA,

1 2873

RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE MORE THAN 11KV ???????????????//

Hakel,

5 26998

what are the type of motors

3 2525

I have cleared IOCL written exam(Electrical). My intv is on 6/9/2008.can anyone guide me & tellme abt intv questions.

IOCL,

5 4207

how dc ct works?

3 3425

what is the difference between inverter and ups & what is the earth resistance for ups , if its high why so

3 3739


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Un-Answered Questions { Electrical Engineering }

any idea abt REVERSE METERING concept.........?

543


size of condotory fron voltage level

535


We normally make oil soak pits under Transformers. Oil from soak pit goes to collection pit. We provide granules/pebbles under transformers. My question is weather granules/ pebbles to be filled in soak pit or not? if yes upto what level?

4009


defination of transistor controlled series capacitor

638


how much allowable resistance that can be difference in motor all coils?

649


Please explain, how to test vector group of tranformer(Delta y1) . Thank

85


how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

763


what is solkor relay and which condition it will act?

1438


explain the mode of metal iranafer in Co,welding

122


in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses?  the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

219


I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.

488


what is electrical machines

1350


why we not used 11kva as a direct our electrnics component.

1124


how much excitation voltage required to generate 1mw power?

426


Why is better to have a minimum ceiling voltage of 250% than 160%?

319