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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why is a thicker conductor necessary to carry a current in A.C.as compared to D.C. ?

1 4879

Then what do you call a transformer that is installed on the ground?"

1 4253

why does connected a indutor with mnsformeretering core of current transformer ?

2142

how to set the transformer differential relay

Divis Laboratories,

1 6679

in 132 kv substation ligtning arrestor(120 kv) connected to line. but line voltage comes to 132 kv, it operate or not???

Divis Laboratories,

4 16811

voltage of a ckt is measured by volt meter having an input impedence camparable with the out put impedance of the ckt Eror caused is 1. Gross Error 2. Errors due to lloading effect

GATE,

2 4265

when the control mechanism is present for an ammeter(1-10A) and 1A current is apllied what will be the reading of the meter?

GATE,

2 4615

Relay setting for earth fault of reciprocating and centrifugal compressor motor feeder.Setting will be different or same?

Reliance,

1 4055

what is cathodic protaction?

1998

The error in a single phase energy meter where pressure coil lags behind applied voltage by 88 degrees and pf is 1) upf 2).5lag

GATE,

1 4663

why we use 20 KV, 10KA LA on 22 KV Line

2 6979

WHY TRANSFORMER RATING IS MENTIONED IN KVA RATHER THAN KW

5 9997

HOW SKIN EFFECT REDUCE THE CROSS SECTION OF THE CONDUCTOR

2 5678

What is eddy current & eddy current loss ?

2 7511

how to avoid Saturation in C.T?

2127

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Un-Answered Questions { Electrical Engineering }

Keywords: Die, Card, Coin, B/N 2 To 12

1286

How I can Compare 120v/60Hz versus 220v/50Hz ? Please tell me both advantage and disadvantage ......

2037

What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

1821

difference between high and low impedance BUS BAR relay??

1624

How can we findout the maximum efficiancy of Transformer? At which load?

2088

What Should be the value of Vector Surge angle at Tripping and how to calculate it?

2057

what is the best transformer oil breakdown voltage?

1128

what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?

4040

Why ground terminal is used in pot meter 10k ohms

1891

what is the difference between electrical and electronic choke?

1970

How many types of electrical earthing are there?

1193

7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

2287

how does it help for selection of a transformer.

1862

1.What is captive power plant? 2.What is national grid?Give brief idea.

2156

how do you test tachos and servos

2127

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