Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the 415V AC Soft starter? Explain with an example?

TCS,

1 3918

Explain types soft starters?

Siemens, TCS,

7 19660

TELL ME, WHERE SHALL I GET BASIC ELECTRICAL ENGINEERING BOOKS IN INTERNET?IT SHOULD CONTAIN ALL DEFINITIONS?

TCS,

1874

Why DC current is not used in transformer?

JK Paper, TCS,

20 36817

what u meant of power plant?

5 7427

if 50hz transformer is required to be run on 50% frequency what needs to be done???????????

century,

6 9366

How Negative Phase Sequence Relay works in case of Synchronous Motor?

L&T,

4 30105

How we detect the leakage current of 11 KV H.T. motors and waht is the maximim limit?

Ambuja, Pristine,

3 8231

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1469

Slow acting fuses are most often used for which application a) Lighting circuit b) heating circuit c) Motor D) Radar circuit

1 3115

What are the consequences in using existing step up transformer (primary 6.6kv/175A, secondary 480v/2405A) for step down transformer to have a 6.6kv output?

1 2838

what is neutral grounding? why is it required? what is neutral grounding resistor and how is its value calculated??

NTPC, ONGC,

11 62104

Why we are using Ohm's law? where it is applicable? explain.

Pyramid Saimira, TCS,

10 18379

WHAT IS BASICS TO SELECTION OF 11 kv Trasformer, send any calculation sheet for selection of transformer

NBCC,

3 8842

Does frequency change with increasing voltage i.e 220v to 11kv? explain if not?

6 9099


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Un-Answered Questions { Electrical Engineering }

Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

1213


What is the angle of inclination for the oil connection from transformer conservator to Bucholz relay and why?

1677


why only exciting current is shown not primary current in transformer???

1362


What is different bewteen low or high impedance busbar protection scheme

3640


Classify milling machines.

630






What are the conditions for sustained oscillator or what is backhouse criterion?

626


why we use the 100% and 95% stator earth fault protection for the synchronus generator ?

1782


Define filter?

624


Why a tesa lamp is glow between two phase?

1497


If one lamp connects between two phases it will glow or not?

590


What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?

1450


What is the accepted limit to increase the choosen transformer capacity over the load and why ?

2679


What is meant by cold loop test in instrument

2093


whether fibre optic cable in high voltage earth conductor is used for protection circuits

1143


Describe the control mechanism of missile launcher???

1493