Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?

180

what is the difference between changer, converter and transformer?

188

what is the difference between transformer,converter and transducer

299




what is the ATS .And how it works.

215

What is distance between electrical panel to land ?

Fresher,

127

highest rating of alternator used in india

1 226

why impudance relay used for medium transmission power system? why not others?

91

what are the functions of fuse ?

1 321




How to calculate cable size by using load.?? Any formula...

143

What is installed in PAC that is control the humidity

Sodexo,

219

what will be the min and max voltage flow from neutral to earth?

158

Maintenance of transformer???

Adani,

205

Explain UPS

Powerica,

1 283

If a high resistance fault occurs,then what are the changes will happen in the system?

193

How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?

415


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Un-Answered Questions { Electrical Engineering }

What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?

1600


Why does the rotor rotate?

973


How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?

651


The coils having selfinductancs 10mh and15mh,effective inductance 40mh when connected in series aiding. what will be the equivalent inductance if we connect them in series opposing?

611


what is high and low cut off voltage of BB and DG at SPS????????

239






How to calculate the input cable rating for 10kva ups (3phase input and single phase output and also 3phase output, battery rating 65Ah)provide the formula also.thnx

1006


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

915


Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.

1075


RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

815


how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????

1004


what is the minimum voltage require to injure our body?

3571


How to calculate the value of earth capacitance in a transmission line.

892


how to make an earthing certificate

1007


I need bhel previous year quetion papers for electrical engineering department.I searched but i could not find out

903


how does an encoder work???

1117