Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is Faraday's law

218

What is the role of the 50 STUB protection at a GIS 400KV substation with SIEMENS protection relays?

211

In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.

237




What is trip and closing coil in cb? Why need of them

189

what is the mechanical safety of DG ?

235

Please, if 1kw is equal to 1.25kva; how then do I know how many kva in 7.5kw?

192

We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

182

Two electric lamps 40 W, 220 V each are connected in series across 220 V. What is the power consumed by the connection?

183




what is the IPC ? & what the uses ?

Bhel,

171

Why 9KV surge arrester having 7.65KV of MCOV?

204

How do we calculate over and under frequency tolerance from generator data?

DPS,

165

CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor

213

I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting

Oman Cables Industry SAOG,

211

Why the earth to phase voltage is high 250 compare to other two phases

178

What is the difference between security constraint unit commitment and security constraint optimal power flow?

College School Exams Tests,

236


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Un-Answered Questions { Electrical Engineering }

How to calculate Voltage regulation of 22 KV Over head Line.

400


How to know of any cable size if there are not written on cabl?

691


wHAT IS CAPACITANCE LATCHING? hOW TO CALCULATE CAPACITANCE LATCHING? hOW TO SOLVE THE PROBLEM IF CAPACITANCE LATCHING APPLIED?

754


what the function breaker failure scheme, how is it operated

676


it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?

751






Why earthing is necessary for any equipment?

366


how does high earth to neutral voltage affect electronic equipment?

155


How can we select suitable capacity generator for three phase load (inductive load) and how to take study analysis in 3 three phase load system ?

797


We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

179


Testing procedure of DG alternator stability test

169


what are the condition that makes hooter blow?

1020


which type of motor is used in automatic swing gate

737


Why AC current leads voltage in capacitor and how?

742


how to determine Sq.mm size of finolex power cables.

786


i karmveer bharti persuing b.tech . plz send me syllabus and name of reference books. for preparation of section eng.

836