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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why Ferranti effect not occurs at full load?

L&T,

4 23114

how to identify the direction flow of electrons in a conductor? if i want to check the sequence in kv lines, is any device is available?

3 5927

What is the importance of creepage distance in disc insulator ?

1 12762

As we know that during saturation test of CT from secondary side, the current in secondary shoots up after core saturation. How core saturation effects the secondary current?

2 4519

Why secondary of a CT in a power system acts as an open circuit after core saturation?

2 5608

which motor is used in mixies

10 23842

the minimum clearance b/w ceiling and plane of leaf of ceilng fan shall be ..........mm

1 3866

why anti pumping relay is not given to tripping coil of the breaker? why only to closing coil?

INEL, Siemens,

2 6043

how to build a network which step down 415v to 1v rms

1943

how to calculate the bus-bar size. give formula with description

1 5962

what is single turn and multiturn encoder ? Can single turn encoder be used to show rpm of a motor(on shaft) ? Plz explain in brief .abanirout@gmail.com

1 3920

Can we use a absolute encoder to show rpm of a motor ? what about the condition when power is off ? what is difference if a incremental one is used ?abanirout@gmail.com

1991

Why most of analog o/p devices having o/p range 4 to 20 mA and not 0 to 20 mA ?

2 5791

what happens when current(ac or dc)flowing through a boucket of water?please describe it.

3 7340

two bolbs of 100w and 40w respectively connected in series across a 230v supply.which bolb will glow bright and why?

DRDO, PSPCL, Siemens,

16 62980

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Un-Answered Questions { Electrical Engineering }

If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?

2014

with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....

1913

Why space heater is required for each verical bus bar chamber? if one space heater is adequate or not for anti condensation?

2497

The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition

1857

Fantio of tranformer

2169

Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?

2105

which capacity of RCCB used for five thousand watt electricity load?

1830

we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards

1976

I have done my m.tech in electrical engg discipline. Can any one please suggest me how should I prepare for getting into phd in iit or nit.How should I prepare for getting into lecturership

1658

Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

2050

WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

1761

How convergengr of nr method is not dependent on selection of slack bus and how gauss siedel method depends?

1763

What we mean by vintage of an engine+Generator?

2090

Is RTCC panel needs any control supply.

2002

Hi Friend I am used multimeter to measure the voltage between R Phase(SS1) to R Phase(SS2). In SS1 is connected with UPS loads. But I am getting voltage between these 2 R Phases. Please give some idea friend

2027

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