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 white color LED light is not possible?

1 4068

operation principle of a generator? Gss, Diesel and HFO which is better and why?

1 4898

I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

1 4060

what is mean by flux

2 4519

How many loops can be provided in a circuit as per IS rules.?

1 3712

how i meggar value of 11kv alternator winding.and with meggar.

1 4362

what is the purpose of using filters in a protective relaying scheme?

2228

How we can find the regulation of transformer?

2 4209

Why selected cable colour red yellow and blue in 3 phase Electrical system?

Crompton Greaves, Essar, Gridco,

9 24314

What difference between voltage and current

5 6723

What is the Basic Difference bitween Long Shunt Connection and Short Shunt Connection in DC Generator?

2300

what iz second and fifth hormonics please explain

Satia,

1 3387

why the generator operating along with the infinte bus bar should never be under_excited?

1 3747

how much GROUND & NEUTRAL VOLT maintain in data center.

2001

how calculated Transformer losses.

1995

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Un-Answered Questions { Electrical Engineering }

how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???

2131

what is the necessity of under ground cables ??

2045

pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..

2006

how solar power plant energy meter multiplication factor

2046

what is the id1 & id2 setting in differential protection relay of CSPC?

2759

what is there inside an inverter and how it works?

1789

Diagram on interconnectivity of 11kv transformer with RMU (i.e, one incoming and two outgoing or two incoming and one outgoing)

2680

Trafo ratio is 11kV/6.6kv,Vector group is YND11. What will be the effect if secondary is used for earthed system.

3765

In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

3072

difference between a diode and thyristor?

2171

why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points

2029

Explain Circuit Breaker Trip Characteristics in detail.

2102

What happens if we connect a single phase energy meter in reverse polarity.

2313

why we not used 11kva as a direct our electrnics component.

2766

how cables go in and come out for distribution from the feeder pillar box?

2046

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