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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

WHAT IS THE REASON,WE USED THREE CORE CABLE INSTEAD OF THREE SINGLE CORE CABLE.

2 4664

why we connect the capacitor bank in star , not in delta in any system

2 6470

what happen if we supply 220v dc suppy to the bulb or tube

2 5345

what is pulverisation

2 4335

what is AVR? what is the function of AVR?

2 5448

in railways why we use the power in 10,20 30kv,why not in the multiple of 11kv

2 4812

Is it possible to interlock between ACB & MCCB?

Areva,

2 10690

How i can calculate current of cable according to ares?

Pharma,

1948

inductive power factor is benefit compare to capacitive????

3 4668

how the harmonic pluses take place in the flow of current

2 4041

what is the consuption rating of motor in one day

1 3227

Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 4951

A 3 phase transformer's (Y-Y) Y and B phase is (Y and B connection not broken) broken from neutral and R and Nutral connection is ok, what will be the relay tripping and why

1917

how can we connect a distance relay to CT core that is for backup protection or metering?

1 4110

HOW CALCULATE MOTOR KW, IF MOTOR NAME PLATE MISSING, WE FIND ONLY MOTOR WINDING RESISTANCE ONLY

1 7365

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Un-Answered Questions { Electrical Engineering }

what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/

2049

Can we convert off line transformer to on line transformer

1949

Why neutral point is consider as zero potential?

2561

description about dry type transformers

1851

how we calculate torque ? how we improve it ?where torque will either motor or generator ?

2015

What is the importance of earthing?

1069

What are dependent sources?

1121

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

2228

Why control of DC motor is simpler?

2390

what causes contact chatter when there is no demand on the air conditioning unit?

1993

What is the difference between voltages or potential difference? And what are they?

1040

How to measure the Harmonic Distortion of UPS ie THD?

2275

What is corkscrew rule?

1092

why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?

1853

How many types of faults are there in 3 phase power system?

1046

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