Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how can I improve the current at same voltage? if yes is there any circuits?

2 3262

how to calculate regulation constants for over head lines? and what are the regulation constant for raccoon conductor at different voltage level and different P.F?

1406

If i=10+10sin314t then find the rms and average value of current with explain?

Heptacare, TCS,

2 12922

If ct ratio is 250/1 and mtr is of 5 amp, what will be mf?

1 2408

What is process of anneling transformer core

1429

Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA

1378

iam completed my DEEE in eillm university. can i get the c licence in tamilnadu its possible or not

1 2830

why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?

Government, PSU,

2331

what is ratio of copper wire size and current ?

1343

why select the 3 phase power supply system in electrical system.

RSE, Yamaha,

3 5989

i HP = ?? 746 watts or 735.5 and how??

1 5373

What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

ABB,

3046

What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?

3385

What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

ABB,

1876

What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current

ABB, Jindal,

1881


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Un-Answered Questions { Electrical Engineering }

how to handle 2500 kva transformar

1106


HI....HOW CAN BE MESARED THE VALVE OF NEUTRAL GROUND RESISTOR WHIC IS LOCATED AT SWICHGEAR ON GENERATOR SIDE....

1574


How earthing of switchgear system to be done.

1426


What types of question are done for diploma students in aptitude test

1048


What are the protection required for Transformer, motor, Line, Generator, capacitor, that all i have to refer which standard?(Like Transformer detail IS 2026)

1427






what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

1422


why 5kW motor becomes unbalance if its relay trip 1st time and its set value is 7.0 A

1482


can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?

1474


what is efficient motors and how it is different from normal induction motors

1401


Why computer humming sound occurred in ht transmission line?

629


IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8

3381


I am going to appear for the RRB Chennai junior Engineer online exam. Please send me the previous exams question papers (also solved) to my mail id: rrkhandhar@yahoo.com

1489


Why we use ups battery and dsdb battery in thermal power plant

1609


10 Mtr Hight of Lighting Arrestar how much area coverd??

1981


how can check the resistance of battery contact?

1731