Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to detect the presence of underground cable(while digging road)etc. -give the name of instrument

NTPC,

7 11581

how to measure the A.C flux .-instrument

NTPC,

8 9539

which subject is better to tell when hr asks the area of interest?..

1547

if step down transformer step down the voltage,will current will also be proportional step up. If yes then how transformer handle such a large current?

4 8411

What is the meaning of Fault level rating?

Balrampur Chini Mill,

1 10068

Why semi-conducting insulation is used in XLPE cables?

1 4263

I have a 600VA UPS for computer only. It holds for 20minutes only. 1. Can it be upgraded for longer period.? 2. Can it be used for one ceiling fan and a tube light? If yes, how to upgrade?

11 37196

what is the knee point voltage ? what is differtial rela? what is impedance and % of impedane? what is the postive phase sequance ? negative phase sequane ? and zero sequance impedance ? what is sortcircuit calculaion? why take calculation? define stabilty test ? why? what sentivity test? define merz protection ? what is the burden ? class 5p10, accracy, metering ct take knee point voltage test thet time what heppan why dont take knee point test to metering ct?

2280

how can we change the rotating direction of single phase AC induction motors?

Heubach Colour, L&T, MNM Jain Engineering College,

12 76255

why C T secondary are rating 5A generaly .

7 10789

why earth hole size is biggest in socket point.

5 8307

If DG runing time Neutral earth connection Dissconect what will be the effect in load and equipments.

GE, HP, Reliance,

3 7416

If DG runing time neutral is disconnected what will be the effect in Engine and Electricial panel.

HP,

2 5472

What is transformer break down voltage.And what is flash oil flash point.

HP,

1 4902

Why dc Supply used in Control circuit.

HP,

12 26875


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Un-Answered Questions { Electrical Engineering }

During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP

1394


formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?

1636


what kn of disc is used in 33kv,132kv,220kv,400kv,800kv transmission line

2853


describe the constructional features of an auto transformer and its principle operation

1799


can anyone send me some sample question regarding power grid corp

1783






How to calculate multiplying factor of dc energy meter

1191


How to calculate the fuse rating depend upon the DC circuit?

2376


what is a types of short circuit and what is a types of distance protection tests

1753


sir i want previous entrance exam papers for written test

1682


I am having dual speed motor of cromton greaves make of 3.7 KW -1400 rpm and 5 KW - 900 rpm. Please let me know groups and winding connction for rewinding purpose.

1499


How many VSC based HVDC are there in India and the world

1740


what happen if generator of micro hydro running at only a small percentage of its capacity, as a comparison, if the diesel generator that runs on only a fraction of its capacity there will be a wet stacking

1428


How do i right a ladder diagram that has 1 actuator that performs a full stroke followed by a half stroke

1611


How stabilizer works??

1630


What are the advantages of instrument transformer?

625