Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to make parrallal ups

1 1962

how make to Incident and accident report

1 3011

is there any pottential in neautral?

3 3252




what is the principle of dc generators?

CPCL,

7 7304

What are thermo couple cables and where they are used.

2 2496

HOW TO DO GRID EARTHING IN INDUSTRIES FOR A PRODUCTION BUILDING

Timken,

3 3980

what is difference b/w HT & LT and the range of HT & LT ?

Schneider, AF,

22 47341

what the purpose of data retrivala panel in substation

NCC,

1 2450




Going in for a three phase motor or a single phase motor, what factor should be considered for this? For eg., to pump water to certain height and such domestic applications, which motor is suitable?

1 1892

What is the type of electrical motor used in mining industries?

2 8266

Why sometime i receive GCU fault /Excitation voltage loss in my Generator Synch Panel .

1 1624

Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.

965

Can someone help me in the Below Quest on Earthing 1.Types of Earthing and Recommended for what use 2.What is the Pit value /Panel N -E value should be or within limit for RP and UPS .

1 2044

what is the funda of earthing? Explain breifly about earthing?

IOCL,

5 7244

CAN ANYBODY PLEASE TELL ME HOW TO DESIGN A SERIES REACTOR FOR LIMITING SHORT CIRCUIT FAULT CURRENT??

707


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Un-Answered Questions { Electrical Engineering }

When will you multiply and devide with derating factors to the actual value while sizing the cable?

681


Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.

764


Who are the manufacturer for Nitrogen based Fire Protectio/explosion prevention for Oil Filled Transformers? India and international both?

637


EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.

698


What is the function of RCBO? What are the different sensitivity ratings & each application?

1060






WHAT IS THE FORMULA FOR CALCULATING CURRENT RATING(DIRECT IN GROUND OR AIR) OF ARMOURED(XLPE) CABLE OF 4C,16Sqmm?

880


how ups works ? various parts of ups and working principle

682


What is the test block protection relay if any body know plz explained

224


what is basic difference betmeen normal & flame proof motor??

877


what is d meaning of inrush current of a trafo ? how u can calculate this ?

1746


why r we using shell transformer for low voltage

712


how to calculate magnetic force genrated by a coil ?

856


why the voltage and current in a long transmission line are called travelling wave?

1042


how to discharge 3 phase power factor correction capacitors

1251


what is the importance of Partial Dischage test for Electrical Equipments

655