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 calculate KW what is the formula for KW.

Toyota, UU,

18 38076

What is the d/f b/w MCCB & MCB

ABC, LMN,

6 20620

what kvrah y we need to take the readind of that

2160

What type of tranformer generaly at soft wares like capacity 2000 kva 1800 kva etc iam confused it CT or PT OR distribution tranformer

3 5910

What is the use of conservater, bucchos relay, breather in a transformer?

Bosch, Wipro, Zadco,

8 27496

Can we use the 60 HZ transformer/rectifier/Motors/Coils in 50 HZ? if not so, why?

3 7517

why contactor not provided between output of VFD and motor?

Siemens,

6 22052

what is pressure relief valve?where it is used????

Mecon,

4 40136

DIFFERENCE BETWEEN POWER AND CONTROL CABLES

NCC,

9 41325

What is the megger value for ht

Electrical,

16 84520

what is derated current of power cable & what is formule to find derated current?

Thermon,

1 14409

what are cable earthing and bus earthing trucks?when and where they are used?

1 7413

in three pin pluge there three pins one is phase and second is earth third is nutral why nutral high diameter compare with phase and earth

Radiant,

10 19269

What is the diffrence between an ELCB(earth leakage circuit breaker) and RCCB(residual current circuit breaker)?which has higher degree of safety and why?

2 8143

what is the function of breather in a transformer

Areva, Bhel, RKM Powergen, Vijai Electricals,

29 116568

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Un-Answered Questions { Electrical Engineering }

Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?

1845

If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

1551

What is the function of RCBO? What are the different sensitivity ratings & each application?

2881

can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

2100

ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine

2162

What is the basic rule for block diagram reduction technique?

1332

Mention what are the different colors on wires indicates?

1331

HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.

2272

How to test lightning Arrester?

980

what is the constructional difference between a power transformer and potentian transformer?

1815

xfhnchncv?

1959

Write the force balance equation of ideal dashpot element.

1387

Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .

2282

How will A Medium voltage circuit breaker(11 kV voltage level) operate under short circuit fault condition whether It is having short circuit release like Low voltage circuit breaker or relay should be given?

2000

draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it

2772

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