Electrical Engineering Interview Questions

What is mean by STUB protection?

1509

what is the function of statics switch in ups and tell me parts

1453

which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter

1556

why trasformer rated in kva why should have to maintain pf in our site 0.9

4142

which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant

1408

whydoes the p.f of diesel generator always be 0.8 explain how will you determine the shortcircuit capacity of network

2918

what is the difference between DOL starter&star-delta starter& automatic star-delta starter

6374

do you know measure the earth resistance?explain

3557

how much mininmum length required to conduct a DC Hipot Test on 33kV AC Cable with 45kV DC? Is it 20meter or Less then 20?

ABB,

1538

3phase 4 wire system is more reliable or 3 phase 3 wire systems?

4737

what is the clearances between phease to phease & phease to earth in 400 kv transmission line?

3444

why delta delta connection generally not use in transformer

7878

What is Goerges phenomina to start SYCHNOUSMOTOR?

3140

why transformer are not used in D.C SUPPLY

6385

how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

L&T,

5434

Un-Answered Questions { Electrical Engineering }

A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

1922

How can calculate the rating of a alternator for a given specific load with formula

1777

7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1709

How to know Resistance and Reactance value of main and aux winding of single phase capacitor start capacitor run induction motor to find capacitor value?

1433

What Normal(Tangent) towers and Tension(Cut-point) Towers?

5033

What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage

5507

I am shobana from Chennai. I am having my personal interview on 19th Dec at Chennai.kindly mail me the questions to mail id shobana.shanthi@gmail.com

1782

Single line diagram for dbb (double bus bar)system.

1389

i m electrical diploma holder i want to do plc \$ Scada some body tell me which insitute is best for me near chandigarh

2581

errection check list for transformer maintenance

2102

explain the types of drives

1481

it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

1425

what is the difference between fault current ant short circuit current?

2171

why steady state stability limit is greater than transient stability limit ? How it can be explained ?

2322

Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC

1489