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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why table fans rotate clockwise .while ceiling in anti clockwise?

4 12800

what is fundamental difference between voltage and current

5 4698

what is negative d.c. voltage, why this voltage is used in base transciever station.

Vintage Air,

1281

an electric bulb or lamp can operate on ac and dc, if yes then why

5 4324

what is the difference between the megger and multimeter operation ?

3 38294

tan delta test of current transformer.

NTPC,

3 12885

hii.i am a B.TECH(EEE) graduate.i want 2 know wat type of qusns r asked in sbi clerk interview 2 candidates like me??kindly post answers ASAP..

1 1207

what is mean by lookup table in microprosser.

1 2613

what is a types of short circuit and what is a types of distance protection tests

Anna University,

1268

How do we measure earth fault current in Generator Transformer(20/420kv),Station Transformer(20/11 kv) and Unit Transformers(20/11kv) for our plant system, since these don't have any Neutral earth Fault relay connected to their Neutral Earth? But for Unit Service transformers(11/.433 Kv) we have an Earth Fault Relay connected to its neutral earth.Why is such so?

NTPC,

1 3241

A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

1113

ITI r/tv trade APPLY (J.T.O VACANCEY) ALSO INCLUD AITT ELECTRONIC,WRITEEN XAM DONE 23.03.10 BUT NO RESPONCE WHY ANATHER ID gopal_gh007@rediffmail.com

KBC, wbsedcl,

2436

why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.

HAL,

1092

what is the difference between the following 2 situations ? 1)Line & Neutral=240V Line & Earth=230V Neutral & Earth=10V 2)Line & Neutral=230V Line & Earth=240V Neutral & Earth=10V

Reliance,

2 4860

What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

TATA,

1319


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Un-Answered Questions { Electrical Engineering }

how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

613


HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?

1094


How to calculate the multiplying factor for energy meter with ct ratio given

1124


what is the difference b/w ground & virtual ground?

1347


what happens to the supply voltage if there is any change in frequency?

4818






how oti and wti connections are different from each other?

1159


What is the range of the stator resistance of 3 phase induction motor?

1031


hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"

1162


how rectifier transformer work in electroststic precipetatore(esp?

1614


detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron

2063


How to Prepare preventive maintenance shedule of machine tool.

1065


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

1087


how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???

992


which is the best institute for PLC,SCADA,DCS in hyderabad

1410


how to control the speed to switched reluctance motor

1064