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Electrical Engineering Interview Questions
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i need to calulate the cable size when watts are mentaind wat z the formula

 1 3396

hw the cable size can be calculated when we have watss, volts, pf, i need the forula

 2 4223

why the colour of insultor stack , petticoat is brown. Is it has some technical reason.

 1560

what is ideal insulator. what are its parameter. Is poecelain insulator comes under this category.

 3 5005

why the name trunking bus PT

Siemens,

2479

How to convert 110 volt alternating current to 12 volt direct current

 2 4656

whay we transmit power in 3phase no in 4 or 2 or 5......etc?

CCCL,

4 6342

Why electric sock occur to human or any lives ?

 2 4018

Why earthing is required, and what effect in earthing result is more than 5 ohm and less than 5 or equal to 0 ohm

 2 5087

what is the effect of back reactive power on the generator ?

MRF,

1723

A distribution transformer giving afrequency of 200HZ, where it is rated for 50HZ. when it will occure?

 2 3916

why aggregate is placed all around substation ground.

 1 1820

What is difference and reason b/w -48V BTS system and 24 V BTS system. Plzzzzzzzzz tel me.

 1711

What will be in Mahagenco Trade Test Exam? I want to know the same.

MahaGenco,

3187

What is stray looses?

 2 4170

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Un-Answered Questions { Electrical Engineering }

R=*ΒΆ l/a

1152

when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

1366

What is FTA card? How it works?

1721

State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp

1458

Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

1480




Why earthing is necessary for any equipment?

1159

Can any one know what are the symbols at the down (below) the analog ammeter??? there are 4 symbols which are they ?????

1450

How we can defined theecopper cable size if we know the aluminium cable size?

1371

Why star delta starter is preferred with induction motor?

617

What are electric motors?

641

What is the difference between indoor and outdoor transformer

5190

What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.

1235

how does an encoder work???

2021

at which voltage level arcing ground is occurs ??????????

1569

What is the use of iron core in a transformer?

627

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