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 battery is connected in series?

HP,

10 16787

what is isolation Transformer?

HP,

8 12536

I WANT TO KNOW LONGFORM OF CT/PT USEDIN POWER PROJECTS OR HT SWITCH YARD.

7 15339

What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?

ITC Infotech,

2024

What is the difference between SSR drive& AC drive?

ITC Infotech,

1 7500

Alternators are invariably star connected why?

4 9923

i need to give section engineer (electrical engineer) for RRB. Please suggest some book

1831

why secondary of open delta pt (two element pt) centre tap is earth what happen when this earth is removed

Essar,

1 6340

what is the difference between AC choke (inductor) and DC choke (inductor), working and design point of view?

Electrotherm,

2 25656

how snubber circuit works to protect switching devices?

Electrotherm,

2 6540

i have 28/32 MVA power transformer with 11/6.6 KC voltage rating and 12%impedance.it have star connection at both side.but it have another thied winding tertiary winding.what is used of this winding. pl tell me

7 10629

we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 3521

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

Bhel, Indorama, Power Grid,

1 6798

As per IS why should the control be taken only from R phase, why not from B or Y phase??!!

2 6238

three phase 180kva diesel generator can take how much load in amp and what is formula to get this?

lenovo,

13 61837

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Un-Answered Questions { Electrical Engineering }

What happens if the Capacitive Voltage Transformer Primary neutral is not earthed. There is a CVT between Transformer and source, and the CVT neutral of the transformer is not earthed, does it effect the transformer while charging or does it effect the transformer charging process.

4235

WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .

2136

hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

2044

hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...

2630

how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.

2725

what is destructive and non-destructive testing of welding

1633

what is the circutor?why we use it ?

2278

The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?

1943

I have a CT meter with ratio 60/5. The meter reading of previous month was 3290.49 and that of current month was 3797.26. How many chargeable units as per normal meter should be my reading.

1374

How many kw will suply from one db

1522

What is mean by hot and cold loop testing? What is the difference between them?

1083

Control cables in S's will carry 1000v which is AC R DC? Pls answer me

2115

What is stepper motor?

1238

how commomn gate triggering is given for TRIAC ? other thyristor wont be efffected?

2393

Explain how to determine capacitor tolerance codes?

1146

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