Electrical Engineering Interview Questions
Questions Answers Views Company eMail

difference between elcb and rccb

ITC Infotech,

3 20092

In India,we use 230V,50HZ,where as many other countries use 110V,60HZ what r d advantages and disadvantages of each of them?

GVK,

8 21156

How do you select a cable size(cu&Al)for a particular load?

2 5638




The readings with a Multi meter are 15 Amps Phase Neutral 192,Phase Earth 194 and Neutral Earth 24 5 Amps Phase neutral 192, Phase Earth 153, neutral Earth 48

1 1708

The reason why the sending end and receiving end voltage sare almost equal when capacitive load is added.

4 7099

WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

11 14703

WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

722

can we connect transformer with star conected secondary to delta connected primary in series?

1 2290




why mccb is not tripping when phase & neutral terminal are interched ?

4 7010

What are the applications of different multistage amplifiers?Plz also write advantages of these amplifiers? Thaaaaaaaaanx

1664

plz send me the syllabus or any sample paper for engineer trainee recruitment if any,on ravinder911@yahoo.com

Bhel, Maruti Suzuki,

995

for testing busbar (33kv) hi-pot .whether we can apply DC r not.and what is the test volt for that .explain

WGPSN,

4 11003

What is STEP VOLTAGE ?

7 15161

How can we measure the frequency of a rotor running in full load condition? Explain the method of measuring.

Wipro,

2 3731

how can you calculate the value of external resistance inserted in a slipring industion motor? (eg. 110 kw / 990 rpm/50Hz/stator v-415/stator Amp-195/Rotor V-440/Rotor amps- 151.)

Bosch, NMDC,

5 38452


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Un-Answered Questions { Electrical Engineering }

describe the fully control circuit diagram of ac drives

634


what is the significance of tan&delta and how it performed in power transformer

641


ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

589


my UPS suddenly goes off and all panel light also blow off.This happens even main electric supply is not interrupted.After some time it automatically starts functioning normally.Batteries are new.

803


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?

1119






How we calculate the size of ht cable for any transformer

816


How can we decide cable size from HT panel to Transformer? Please give you reply with some examples.

1015


What happen if we apply square wave or traiangular waveform voltage to the transformer primary winding instead of sinusoidal wave?

750


ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

935


Testing procedure of DG alternator stability test

190


Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.

1061


What is super thermal power plant? and how it will differ from normal thermal power plant

1069


what is meant by impedance & transient protection?

795


12.5 tons a/c is their how much kva generator can recommend to the customer.

694


how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

1177