Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how to work current transformer and potential transformer

Adhunik,

1 5253

what is main difference between live tank and dead tank current transformer?

Atul,

2 28791

what are the different types and applications of compressors?

1 3699

compressor compresses air means exactly what happens?

2 4639

can we individually produce electriciyt

1 3453

what is the defination of 'Mass' & 'Weight'

3 8811

Dear Friends, I have a 500KVA transformer supplying whole factory having 3 phase and single phase mixed loads. Power room has ammeters connected via CTs for individual phase. Now I know that readings shown on meter for each phase say R,Y and B are line currents. But when I want to know the total on transformer do I need to add the currents of all three phases readings shown on meter or value for anyone phase will give me the correct power load on transformer for that point of time. 2. If ammeter shows unbalanced readings for R,Y, B phases say 150, 250 and 300 respectively so can I assume that 150A i.e average of 3 will be the 3phase load currents and remaining will be 1phase currents. Please clarify my doubt.

4 7650

what is the maximum load in MDB,SMDB and DB

1 10473

how to wiring 20 hp motor get completated?

Alchemist,

1 4601

wich type of cable is selected for wiring of 20hp motor?

Alchemist,

5 9908

give me list of material for wiring of 20hp motor?

Alchemist,

2 5388

What are the various types of BUSBAR Schemes? explain each

NTPC,

1 5330

What are the various types of BUSBAR Schemes? explain each

Thermo,

2 36308

my motor rating is 800HP, 128Amps, 3.3kV. What is capaitor bank i can use for PF improvement to 0.990?

3 6434

What is the Power factor of DC Power system ?

9 39534

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Un-Answered Questions { Electrical Engineering }

substation+ plc system

2080

what is meant by IGBT how they differ from tyristor ?

2444

wat is the first thing dat is needed, 2 lay a cable in some area??

1859

how to get electrical supervisour certificate in gujarat

1962

how we can calculate chiller required ampear?

2055

. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

3348

what happen as when voltage drop(or may decrease) ? in case of atomic base theory?

2026

ROC converges if pole and zero lies inside a) origin b) z=1 c) pole d) zero ? Explanation please? if ROC does not converges then?

2951

Explain the method to keep noises low in a control system?

1142

What is the difference between circuit breaker and isolator

1254

acb(AIR CIRCUIT BREAKER)NOT CHARGING AUTO

2398

I WANT YHE TECHNICAL AND ELECTRICAL SPECIFICATIONS OF 2x4MW 11KV 2x10MW 11KV 2x25MW 11KV 2x100MW 11KV HYDEL POWER PLANT i.e PROTECTION SYSTEM,MONITORING,CONTROL SYSTEM,GENERATION,SYNCHRONISATION,METERING PLEASE SEND THE DETAILS TO MY MAIL ID SPRAVEEN_222@YAHOO.CO.IN

2095

where was current transformer protection units used and why??

2038

How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?

4279

what is the internal working of star delta starter

2113

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