Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why are some relay circuts designed to have the ct current flow through the neutral instead of the phase wire, such as in some diff relays?

1 2384

Why should we use the igniter in the sodium vapour lamp.

Delphi, PICT, NTPC, Mudhra, ABB,

7 60523

what is the ideal earth resistance

Enercon, Amit Enterprises,

11 14610

What are the difference between these terms ? e.m.f, voltage, potential, potential difference, current etc? what are the difference between these terms ? (electromotive force) e.m.f, voltage, potential, potential difference, reference potential, reference potential difference, current. How can i explain and describe these all terms in single line each and little more explaination too thanks


2 5163

How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

2 4236

how one can check the Current of a DC 12 V battery ? Procedure. I told that take a thick wire (having more wires in it) and then join the + and - terminals of battery with the help of two ends of a thick wire .... is this correct or wrong .....

1 1993

can you check the current and voltage of a 12 V battery by a digital multimeter in this fashion that apply the digital multimeter across the battery terminals directly ? say yes or no ... i sais yes ........... is this true or false ? plzz tell me and also explain ........ plzz thanks

4 2900

What is the working of AVR in AC generators?

Navrachana University,

13 84303

MCCB 400 Amps 50KA 430Volt AC What is mean by 50KA

16 37441

what are the safety measures of induction motor?

3 3913

what are the safety measures of induction motor?


What is an electric arc?

3 2448

How will you Physically differentiate A.C and D.C motor?

BSNL, Polycab,

10 13619

In a Dyn11 transformer, how are the 3 windings of the delta connected? Assume that R1-R2, Y1-Y2, B1-B2 are the 3 windings on the HV side.

3 4206

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Un-Answered Questions { Electrical Engineering }

What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?


In siemens PLC, why do we want to move the data ?


What happened when voltage will half value of current ...


what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?


Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet




Inverter. converter. Ups.MCB.solar.alternators. motors.


tell me about roaster switch .& what is the function in transmission & distribution?


What is the difference between earthing,ground&nutral?


Can we use 230VAC, 63A MCB for 120VAC, 63A supplied heaters load?


What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?


What are the necessary solutions needed to be carried out on a malfunctioned earthing mechanism of a VACUUM CIRCUIT BREAKER.(TAMCO)


Distinguish between nuclear power station with thermal power station for initial cost, starting period, cleanliness, and transportation of fuel


wat is the first thing dat is needed, 2 lay a cable in some area??


What is the comparison of PILC and XLPE cable