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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the rating of HT SUBSTATION and LT SUBSTATION?

NTPC, Sail,

11 47262

Assume a condition such that two motors of rating 6.6kv,415v are connected to blower,so tell me which motor draw large current give appropriate reason?

NTPC, Student,

2 5440

What are eddy current and define rms value?

NTPC,

4 7965

Transformer's core is made up of which material and why so?

ABB, NTPC,

10 25834

Draw the line diagram of diffretial relay connected to transformer?

NTPC,

1473

Name different types of fault and which instrument is used to measures earth,short,open cicuit fault?

NTPC, Vijai Electricals,

6 9589

AC current is flowing in a wire in your home how can you measure it(name of the instrument)

NTPC, TCS,

24 14674

How does and Earth Fault Relay operates in DG set control panel?

Cummins, University,

1 4654

1> what r different types of fault in cables? How will u locate and test these faults? 2> why earth wire is provided on top throughout the transmission line. why not only on towers? How much area it can protect? 3> what r different types of transmission losses? How power loss can be minimized? 4> what is the % of power loss on transmission lines?

IOCL,

3 8145

what type of relays used in transformers?

APTransco, BSNL,

24 53229

What will be the capcity of 3 phase DG set require for 25 KVA single phase lighting load?

Supernova,

7 13214

MCB is used for high rating &MCB is used for lower rating.What is technical difference between ACB & MCB?

 7 8377

what is MUSS?

HP,

1 10533

what is phase and neutral.

HP, Voltech,

16 56145

what factors to needed while selecting a MCB and MCCB

 3 7988

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Un-Answered Questions { Electrical Engineering }

what is mind in cable

1086

Why are the cores of large transformers built up of circular transactions ?

1093

HOW TO WORK A VFD?SAY SIMPLE METHOD

2856

sir plz send some previous year questions of jspl.

994

what are the things that can cause a three phase motor to crawl?

2226




What is The Resistance Formula

217

In a synchronous motor. if start is running at high speed.  What will be the starting torque : Higher Lower Zero

785

"TRANSFORMER MODELING AND ANALYSIS" MEANS WHAT AND WHICH TOPICS U READ IN THIS

975

Sir, I m 3rd year student 4m DCE and want to do internship in siemens or l&t or any other mnc related to electrical engineering. please tell me the procedure 4 same and oblige me

1005

It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

1240

What is the tests required for a 132 kV, 400 kV , 765 kV for a Circuit Breaker and Power Transformer before commissioning ?

739

dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish

1398

What is signal flow graph?

169

how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt

1062

what is fault level of power system ?

3925

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