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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Can anybody tell me why inductors draw lagging current and capacitors draw leading current from supply?

4 7452

what is reactive power and active power

4 5315

What is the Ohms low calculation

2 3830

Single phase and threephase power calculation

1433

What is the Impedance, inductive reactance calculations

1254

What is the RMS Value. Please discribe in detail

Bhel,

14 14326

What is the transformenr turns ratio.

5 9230

How to measure current and voltage in an ELV circuit

3425

What about electrical Units. discrive in detail

1342

Discribe type of fault in DOL and stardelta startor.

1644

What is Skin effect in Cable?

4 5342

Waht is Inductor?

2 4220

WHAT ARE THE SITE TEST APPLIED ON A SURGE ARRESTORS? DO MEGGER TEST APPLIED ON SURGE ARRESTOR? IF YES THEN WHAT ARE THE ACCEPTED IR VALUE REQUIRED FOR SURGE ARRESTORS FOR VOLTAGE LEVEL 11KV, 33KV, 66KV 132KV, 220KV AND 400KV?

5 8957

IS HI-POT TEST DONE ON A TRANSFORMER - YES OR NO? WHY?

4 10828

is KVAR (not reverse power) relay necessary to protect from excitor field failure on a brushless, synchroneus generator? Some people with previos experince tell me no but the manufacturers tell me it is designed for that purpose. Is it that it is only necessary for brushless generators and not the older style with the slip rings and brushes?

1 3707


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Un-Answered Questions { Electrical Engineering }

testing of Vector Group – YNaoD II

2192


If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

1311


why starting current is high and resistance is almost 0 during the starting of motor dc motor...?

1109


can someone explain that how the speed of the protection system affects the fault level calculation?

1301


what is the circutor?why we use it ?

1664






What is difference between safe PLC and normal PLC

829


I have a situation to design sub-Distribution board/Panel meant for feeding power sockets. In the incomer CAN i Take TP MCCB with Neutral Link and All the outgoing feeders with to sockets with TP MCCB and Neutral Link? P.S : My System is IT Earthing

1157


the grid connection required for a 50 MegaWatt fotovoltaic powerplant is higher or lower than 35kv (high or medium tension)?

1251


How to check the Bushings of the transformer?

1098


how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?

1406


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1233


What is the meaning of dedicated earthing?

1374


Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

1415


Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?

1463


1.main parts of generator? what is used A-check,B-check,C- check? 2.what is FM200 system in data centers? 3.difference between pac,ahu?

1491