Electrical Engineering Interview Questions
Questions Answers Views Company eMail

wath is skin effect?

9 5687

How many earthing pits required for diesel generator set ? Why ?

1 6265

what is the fuction of electrical transducer in control pannel?

6 3525




which is batter in construction job,ELCB or RCCB?

HCC,

7 12928

whate is aelectrical power fector for exampal

8 6589

We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?

6 5088

HOW MANY EARTHINGS REQUIRED FOR GENERATER

Juniper Networks,

10 10338

what happen when dc shunt motor field is sudden open in running condition

TCS, Bhel, APGenco, IIT, JMRC,

34 51588




if the magnetic lines can pass through a vaccuum area

680

What Is Transformer Impedance ?

Con Edison,

6 11359

How conventional fire alarm system works?

1 920

WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?

ACC,

914

how to choose the cable rating for load (KW)? EXAMPLE.50KW load

Siemens, ACC, PowerSol, NCUI, Polycab, SW,

14 147679

whats the diff b/w mpcb and mcb?weather it trips on single phasing or not.

Essar, Electra Power,

9 11049

what are the safety measure & controls in engine?

RRB,

2 4096


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Un-Answered Questions { Electrical Engineering }

solor panels arrange some angle,panel is flat fitted energy was produced or not why?

646


Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?

475


please explain to me how to calculate current,voltage,resistance with formula??

188


How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V

723


please send previous exams question papers

656






how we can calculate chiller required ampear?

825


Block diagram of Power line communication?

1057


how to set relay setting? and example calculation...

783


what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

873


how to read idmt curva

832


what is the use of vcb & isolator in substation?

1061


Why 11kv to be generated in generation station

478


TCS IS IT COMPANY THEN WHY DO THEY NEED ELECTRICAL &ELECTRONICS ENGINEERS?

701


What is dynamo function in DG sets and draw block diagram?

640


while doing high voltage test on 11kv/433 distribution transformer why we only give 28 kv on hv side and 3kv on lv side for power transformers what is the value what factors it depends

1306