Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

OPS,

2170

what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..

HPCL,

2070

WHICH SIZE A.B.CABLE IS USED FOR 11KV.

Novel Tech Park, Power Grid,

2151

Can anyone send details regarding motor protection relays ? their manuals please ?

1 3040

How is a capacitor bank is designed ?

Asian Paints,

2 9997

We have a couple of oil tanks at our plant. One of them does not have a lightning arrester installed. My question is it necessary to install an arrestor on every tank or will this particular one be covered by the arrestor installed on the ajdacent tank, Since all the tanks are close to each other. Basically, I want to know that if these arrestors or protection works in a parituclar area of effect or influence. Thanks

2015

HOW DOES THE PERCENTAGE DIFFERENTIAL PROTECTION WORK IN POWER TRANSFORMER

1 6242

Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..

IOCL,

2078

what is meant by oil filled power & distrubution transformer ? if anybody know the link of detail about above transformers means plz send it i have interview on this week ? plz help me

3 5121

WHAT IS RMU & HOW IT WORK,IT USEFUL FOR HT OT LT POWER DISTRIBUTION MAUFACTUERE IN INDIA.

2 11779

22kV HT incoming should be 3 phase or 4 phase? why is it not 4 phase?

1 4139

A 200W,230V lamp is connected across 115V supply.The lamp will draw power?

SJVN, TCS,

6 33676

how we can set the IDMT relay.

Suzlon,

2166

for high freq ac,why we first convert AC to DC and then DC to high freq.AC

2110

with the help of drive can we run the 50hz motor on 100hz,what will be its effect.

BPL,

3 9592

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Un-Answered Questions { Electrical Engineering }

State any two nuclear power stations in India, with their generating capacity.

1829

why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??

1996

What are the types of instrument transformer?

1130

1600kva capacity Transformers how the bucholz relay,Oil temperature,winding,surge relay relays setting are to be done

1863

in shunt clippers why a resistor is used in sereis with the input

2030

placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!

2120

What is a differential amplifier?

1186

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

2123

what is level 2 automation?

3111

What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

1060

what is the use of Auto re-closer?

2098

State nyquist stability criterion.

1126

describe the Tranformer testing procedure

1845

how many electricity poles are there and what are the names and their sizes.

1868

Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?

8024

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