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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the rating of HT SUBSTATION and LT SUBSTATION?

NTPC, Sail,

11 57048

Assume a condition such that two motors of rating 6.6kv,415v are connected to blower,so tell me which motor draw large current give appropriate reason?

NTPC, Student,

2 7892

What are eddy current and define rms value?

NTPC,

4 11355

Transformer's core is made up of which material and why so?

ABB, NTPC,

10 32095

Draw the line diagram of diffretial relay connected to transformer?

NTPC,

2440

Name different types of fault and which instrument is used to measures earth,short,open cicuit fault?

NTPC, Vijai Electricals,

6 13578

AC current is flowing in a wire in your home how can you measure it(name of the instrument)

NTPC, TCS,

24 28566

How does and Earth Fault Relay operates in DG set control panel?

Cummins, University,

1 6897

1> what r different types of fault in cables? How will u locate and test these faults? 2> why earth wire is provided on top throughout the transmission line. why not only on towers? How much area it can protect? 3> what r different types of transmission losses? How power loss can be minimized? 4> what is the % of power loss on transmission lines?

IOCL,

3 10765

what type of relays used in transformers?

APTransco, BSNL,

24 66022

What will be the capcity of 3 phase DG set require for 25 KVA single phase lighting load?

Supernova,

7 17639

MCB is used for high rating &MCB is used for lower rating.What is technical difference between ACB & MCB?

7 12755

what is MUSS?

HP,

1 13239

what is phase and neutral.

HP, Voltech,

16 65516

what factors to needed while selecting a MCB and MCCB

3 10478


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??

1974


We have a couple of oil tanks at our plant. One of them does not have a lightning arrester installed. My question is it necessary to install an arrestor on every tank or will this particular one be covered by the arrestor installed on the ajdacent tank, Since all the tanks are close to each other. Basically, I want to know that if these arrestors or protection works in a parituclar area of effect or influence. Thanks

2054


Define the three phase formula fuse.

1869


Formulae for calculating the transmission line losses for different voltage levels

2179


In vapour absorption refrigeration machine fluids used are

1234


Can u tell me design of switch yard

2173


how to caculate cable size for diff types of loads? if anyone know the calculating procedure please tell me

1439


if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain

1297


At what speed an electric car can run with 2 HP motor of weighing 400 kg?

1827


What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

2089


in dc series motor if field wdg is shorted then

1862


difference between ac series and parallel circuit

2043


what is the transiant condition in alternator? and how it can be prevanted?

2099


what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network

3809


in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses?  the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

1740