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Electrical Engineering Interview Questions

WHAT IS THE FULL FORM OF ONAN ( TYPE OF COLLING IN TRANSFORMER)

13320

what is the necessity of under ground cables ??

1102

WHY WE USE SIEMENS plC

5305

DIFFERENCE BETWEEN TRANSFORMER AND CURRENT TRANSFORMER?

6250

Why a transformer Noise during its running condition ?

NTPC,

9137

about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ?

NTPC,

4871

What is relation between transmission lines & Communication lines ?

NTPC,

1268

Which Machine u will prefer to use at a place where flammable gases are coming out & why ?

NTPC,

4091

how fault in an electric system is detected & hw protection of equipments is done ?

NTPC, RLY,

5622

Why we didnâ€™t feel electric shock in an electric train ??

NTPC,

22286

i Have 1000kva 11/.4 kv voltemp make t/f Its a 2 year old. i wants to known how much iron losses & copper loses during no load condition.

2652

Can I use cable armour as a earth conductor? if not how many GI/CU wires I need to run along with cable?

2915

What is the general power factor & min. power rating of TV,LCD type TV, CRt type TV, Scanner, printer?

1124

How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.

5068

Can neutral line also be use as a earthting for distribution transformer, or we need separate earthing pit forh the transformer?

3924

Un-Answered Questions { Electrical Engineering }

What happens when ac supply is given as excitation voltage instead of dc supply

2441

How would you calculate power loss in a resistor?

151

Why phase sequence must be same in any ht motor or generator circuit?if phase sequence doesn't same whatever will be affect on circuit?

1236

How RTCC panel is working and give single line diagram for RTCC with transformer?

2179

importance of reactive power management

1096

What are the different types of dams?

179

can you send me the placement papers of electrical engg. from companis like NTPC,DRDO,IOCL,HPCL,BPCL etc.?If,plz send as soon as possible.Thanks.

1199

The power supplied to a 33microF capacitor from a 120V, 60Hz source will be

1061

Is it possible to make a 5P10/ CT Ratio 50/1A Burden 5VA

712

what is doid

1699

SIR, GIVE ME OPGW SAG CALCULATION FORMULA I AM DAE ELECTRICAL. THANKS

4880

how does it help for selection of a transformer.

908

is IS says that neutral should be brought to switch box. and this one is a recomended practice

1013

How to perform a DC resistance test In Alternator and their proceduces?

434

why cable i burning without tripping. how can protect led street lights

605