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,

2214

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

HPCL,

2106

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

Novel Tech Park, Power Grid,

2201

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

1 3110

How is a capacitor bank is designed ?

Asian Paints,

2 10147

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

2054

HOW DOES THE PERCENTAGE DIFFERENTIAL PROTECTION WORK IN POWER TRANSFORMER

1 6309

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,

2114

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 5220

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

2 11893

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

1 4205

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

SJVN, TCS,

6 33902

how we can set the IDMT relay.

Suzlon,

2215

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

2147

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

BPL,

3 9724

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Un-Answered Questions { Electrical Engineering }

What is the need for a controller?

1221

Give some example of fault limiting devices?

1360

Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

1886

how many safety really of DG sets.

2229

where does 22kv line starts

3097

how to minimize earth resistance upto 2Ω, if the resistance is 6 Ω ?

1840

What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

2282

What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?

6299

What is the form name of 'c' license, I want to download in web

1899

Q: How to calculate Transformer losses , tell us by Formula.

2074

which type of motor is used in automatic swing gate

2011

how to calculate mf when meter and cTPT detail are given

1842

Write the force balance equation of ideal spring element.

1257

what purpose to use excaiter in DG.?

2797

Where should the lighting arrestor be placed in distribution lines?

1148

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