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Electrical Engineering Interview Questions

How big (size) can the tertiary winding be in transformer? Can we load the tertiary winding, if yes then how much we can load it?

3847

What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

920

wht is meant by sh6

2843

What is an isolation transformer?Why do we need isolate circuits?Where do we use them?

4374

why the value of impedence is taken as %impedence in fault currrent calculation

1868

why use phase displacement in transformer.and effect of phase displacement on transformer

IOCL, ONGC,

1905

I have raw material for making Compact-Choke for flourscent lamp of 40 Watts. We are suppose to get 0.4 amps output at end. but we are getting 0.42 or 0.44 amps and above. We have done many testings in different but nothing worked out. Please suggest me how to get the correct output. We are using 1. core winding of 700 windings of aluminium 2. E-shape iron fillings and I-shape iron fillings to surround the winding.

4858

what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

1327

how the vaccum ckt breaker workes..? how the arc is quenching in it?

2891

what is differant beetween overload current and phase current?

1358

why the no.of slots in stator in not equal to the no. of stator in rotor in induction motor????

15556

If i switch on a transformer but with no load connected to the secondary path.Is the transformer will burn?

5105

how we select HRC FUSE ?

AXA,

4166

how digital four pin earth resistance tester works

3053

what is difference between low voltage and high voltage

29390

Un-Answered Questions { Electrical Engineering }

i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula

1296

What is the difference between a verilog task and verilog function?

217

Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?

1203

i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

938

WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .

1291

Name two low frequency oscillators?

323

what will happen if dc is supplied in acb or mccb or other circuit breakers?

728

Safety of on line ups

1063

what's the difference between 'shaft power demand' and 'BHP' , when we consider electrical load list.

648

What is the formula to calculate the no load current of a single & three phase induction motor

1326

why can the rotor of 3 phase slip ring induction motor not be a 2 phase rotor?

1126

What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

233

what will happen if OLR CT in all phases are short circuted

1190

What are the advantages of stationary armature and rotating field system?

247

List advantges of active filter over passive filter?

226