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Electrical Engineering Interview Questions

Which types of Gases occure when mineral oil burnt

2373

Name of Hydrocarbon gases.

2737

How reverse power relay sense the power is reverse in the system.

5592

what is the use of vcb & isolator in substation?

1706

what is the use of vcb & isolator in substation?

16707

In 6600/√3/110/√3v voltage transformer,how much output voltage in open delta transformer,after removing 1-phase of primary side on transformer?

1895

what is tha between elcb & rccb?

4516

power inverter we are using 2n3773 power transister in that places we can use any IGBT ?

3514

WHAT IS DIFFRENCES DCS & PLC

3051

What is the Difference Between the SCADA & PLC ? Both it also control and Supervise Then what Special in Scada & PLC?

3321

why gravels is used in transformer yard?

14599

what is power factor? is it good or bad for a system? what will happen if power factor increase or decrease?

Bhel,

10412

why it is in star to delta form of Synchrounus generator and delta to star form of Generator Transformer (or step up transformer)

3662

hey guys i recently saw a long transmission line in which a sort of balloons in red and white color were hanging at each section.do u have any idea why are they kept for?

5661

we all know that corona is nothing but ionization of air around the conductor and there by allowing current to pass through ionized air.but we are not getting any short circuit in between the respective phases though the air turned as a conductive media between them??

3201

Un-Answered Questions { Electrical Engineering }

A ray hit a smooth regular surface at an angle of 20 from the normal. Calculate : 1. The angle btw the incident and reflection ray. 2. The angle of deviation.

1298

what is meant by poly phase induction motor ? how its operating by single phase or three phase?

1555

please send me jindal previous aptitude and technical question and answer.my email id is deep_raj@live.com

1295

Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

1240

What are the main parts of central chiller plant? Explain the function of each stage.

4077

What is the function of electron gun used in crt?

455

what is the difference between surge protection capacitor and surge arrestor

1641

what is the difference between dry and wet type of 132kV terminations. which one is durable

1390

what is PDU in transformer?? which company manufacture??

1215

in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?

1614

What do you mean by transformation ratio of instrument transformer?

473

Why the cores of large transformers build up of circular cross section?

1480

Define stepper motor. What is the use of stepper motor?

486

What is the power factor of a transformer at no load?

435

What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

905