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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

in 33kv/11kv stepdown t/f why should we use Star point

2 3533

When PRV operated at power transformer ,can anybody tell me particular pressure for 50mva transformer plzzz.

BWSSB,

1 2637

difference between local breaker backup relay or backup protection relay ?

1 2804

Does VT metering core can be used for synchronizing.

Shrishti Power Technologies,

1 2590

Please explain, how to test vector group of tranformer(Delta y1) . Thank

PGCB,

1701

how to test YNyn0 vector group in transformer?

3891

Master trip relay code no

TR,

2 3818

if reactive power become zero in transmission system then what effect on system.???

Sedemac,

3 5778

Why double earthing is required ?

1 4082

What is the meaning of dedicated earthing?

Dabur,

2169

The basis on which voltage selection of motor is done i.e. either HT or LT.

DAE,

1 3332

What is cogging and crawling phenomenon in motor.

DAE,

2 4415

I want to know that a 160kva diesel generator contains capacity of 160kva on each phase like R=160 Y=160 B=160 total RYB=480kva or it is total capacity of all there phases like RYB=160kva ... thanks in advance ...

jlpl, JP Saraswat Engineers,

2 3404

what is inverter and converter

Hindustan Syringes and Medical Devices,

1921

If age of Raju is 20% less than Sanju,then age of Sanju is how many % more than Raju

Tech Mahindra,

2 4474

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Un-Answered Questions { Electrical Engineering }

regarding safety what would u consider the most important rules to observe when inspecting electrical equipment?

2053

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

How to setting the volume of RTCC panel AVR (11kv) controller

1593

1. Why is the speed of shunt motor practically constant? 2. Why dc series motor use to start with heavy loads? 3. advantages & disadvantages of separately excited generator over self excited generator?

2546

Is it possible to connect a safety device in to parallel?

2156

How Can You Relate Power Engineering With Electrical Engineering?

1237

what is the Transformer Impedence?How can calculate?

2097

How many size of cable required for a 300m long and 30kw inductive lode

1305

how to design step down 12 V, 1mA small transformer from 220 V AC? Because according to VI relation and power transfer it results bulky...

2090

Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV

2168

A double circuit with dog conductor 66KV Transmission line from wind farm evacuation to feeding substation having capacity of 25MW for transmission. Can same transmission network be considered for further expansion of Power & how much in MW. If we need to expand next 10-15 MW more will there any augmentation is required in transmission network? Kindly reply asap.

2198

HOW TO DESIGN THE body EARTH cable(Copper Conductor) size for 60KVA UPS?

1999

why ten delta testing is carried out on power transformer

1816

What happen to generator if i have unbalanced load?

2105

ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

2104

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