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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is center gravity load in substation?

2423

why transformer neutral and CT Secondary neutral is connected to earth?

NCC,

3 4674

What is the main difference between generator and alternator

4 5123

How to calculate current carrying capacity of copper conductor _ such as cable size 25sq mm,50 sq mm, 75 sq mm, 100 sq mm

2 4505

What is the difference between diesel generator engine with and without turbo charger with the same capacity?

1687

what is PDU in transformer?? which company manufacture??

1899

a 440v 60hz 03 phase 100kw generator can deliver how much power in kw for 220v 60hz 01 phase load?

1 2371

can we use the 110 v primary Tr 240 v secondary step up Transformer as reverse 240 pri 110 sec

Hyundai,

3 4334

Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

1939

how ups works ? various parts of ups and working principle

Serco,

2005

Explain Power factor in simple words

ETO,

1 4174

Describe Non I.S. Earth System and why is it used?

KPJV,

1788

Why lose 1 phase voltage in 33kv to 415v stepdown transformer

1739

why wire sizes are 3/29 or 7/29 and why not wire sizes are 2/29 or 6/29?

OGDCL,

5150

why generation voltages are 6.6kv or 11kv and why not some one give that stander that generation voltages are 5kv or 12kv?

AES,

1 4072


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

please send the IS strandard for electrical to sakthi_murugan86@yahoo.co.in

2258


Dear sir, I completed DECE In the year 1995.Now i am working in a private company from last 10 years as an Electrical supervisor.The company having a 1000 KVA transformer.Now i try to apply "C" Licence. I am eligible or not.If not eligible,pls give solution.

1753


i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance

2614


how many joint can done in HT line and what is life of the joint

2228


what's producer of XLPE cable laying in undergroung

2128


what is size of 3phase 4wire cable to be used for 11 ton ductable A.C and how to calculate cable size for different load

4024


State the methods of improving power factor?

1146


What is the effect on 3phase induction motor if current setting knob of DOL kept at minimum current?

3736


What are dependent sources?

1178


how can i get an electrical c-certificate?

2226


How to calculate main incomer rating of APFC Panel ? Let's say i want to find main incomer for 11kV, 1000kVAR Panel.

1952


If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

1882


which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing

2608


Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?

1929


A generating system will have a total capacity of 300 MW. Find the probable forced outage when the capacity is supplied by two 150 MW units. The operating probability of all units is P=0.98 and forced outage probability rate Q =0.02 .

2637