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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Basic philosophy of applying 3P tripping for uptill 132KV switchyards & for 132KV & above 1P/3P tripping is used.

L&T,

1 4320

Is it necessary to seperate the DG earth grid with Electricity Board earth grid for protecting the DG set. if yes why?

BARC,

2 4812

Isi standard of lux level required / to be maitained in different working place general & in textaile industry.

1 7138

why breather cap filled with oil?

7 19310

what is the ambient temperature of transformer oil & winding?

Reddy Labs,

2 8587

Why dose an electric meter record KVA when there is no load on a 500 KVA transformer

1 5308

how is working d.c amps meter?how to connect the dc ammeter inthe circuite?

2 6829

which type of starter is suitable for single phase motor ?

IOCL,

11 16823

how we calculate the 30 KW 3phase electric motor current on noload

Monnet, Siemens, SSR, Supermac Industries,

23 153298

What is harmonics and how the 1st,2nd,3rd etc harmonic levels

2 7919

How the CT and PT ratings are calculated

5 18913

expansion of rccb

3 7628

Why do power lines not short out when they fall into water?

2003

In UPS what does 600va reffer to?

4 38213

How to test Power Transfomer vector group?

Bhel,

1 2941


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

1648


IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

2569


Can you explain about Restricited earth fault protection scheme

1854


During FEED, you will have all the information with regards to cable. How will you calculate the MTO for MV and LV Cables? what are your considerations?

2470


Define end float in a motor?

5939


How to design the NGR Resistance

2075


What is the drawback of static coefficients?

1619


(1)Can earth and be conected together (2) what is the diferent between earth & neutral

1812


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1980


10 Mtr Hight of Lighting Arrestar how much area coverd??

2505


If i am running of spindle at 2000rpm ,but How to spindle stop at the second I am resetting the machine in CNC machines

1641


i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.

1938


how is find out kwh step by step

1796


Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

2139


what material is the electrical housing wire made of? is there any difference for the telephone lines?

1969