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 determine motor size for a fan application?

EDC,

2299

Is better to supply the voltage for static exciter from the auxiliary power source or from the SG terminals? And why?

1933

What is meant by term Back to back in HVDC transmission?

SSC,

1 4303

how we can calculate LT side current of transformer

L&T,

2 8781

which motor is used in our Indian Ceiling fan -Capacitor start and run or Capacitor start? (during repair i saw only one capacitor so it should be start only)

ABB, Bajaj Electricals, Power Grid, Ruchi Soya, Suzuki,

5 16995

what is the principle of switchgear and its function

1 3892

Please mention available current rating for MCB,RCCB,MCCB in the market or any website

ETCO,

1 8987

rating of ups??

1 3543

Is it possible to connect a dYN1 transformer in parallel with a YNd11 transformer.

4 16156

16kv transformeris stolen in my village.and department is not taking action.then what should i do.any shortcut .please help any idea

1 3629

how can we select the rating of Load break switch that is connected to the primary protection of 200 kva 11kv/415v distribution transformer?? step by step calculated answr pls...thnk.u

Maruti Suzuki,

2 6426

What is difference between VCB and SF6 breaker

4 8881

what is suitable cable for 25 HP motor ? start with VFD ac supply 50 hz

Mac,

3 6557

In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1968

if one potential missing in energy meter , how much % slow the energy meter?

NTPC, SK,

1 5635

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Un-Answered Questions { Electrical Engineering }

why you don not show protection and type of isolation in key single line diagram?

1986

1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function.

6306

i m electrical diploma holder i want to do plc $ Scada some body tell me which insitute is best for me near chandigarh

3106

why did youi choose this career?

2223

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

2183

What is load boxes ?

2172

in parallel operation of power transformer why the distance between power transformer and capacitor bank feeder is necessary to know

1824

sir i applied for hpcl(electrical).i want to know from which subjects most of the technical que will b asked.and pattern of the written test.pls help me

1948

The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

1627

upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

2156

How to find out damper winding failure for synchronous machine?

1512

What is different between resistance grounding system and resistance earthing system?

1155

what are factors comes under relay setting (distance relay 7sa52) under OPEN DELTA VTs connection??

2562

how ceiling fan worked?

1921

what is dc mator?types of dc motor?losses in dc motor?what is the mechanical,electrical and commercial efficiency of a dc motor?

2081

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