Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the value of 3 phase voltage?

RECPDCL,

7 3660

why do we need a 4th wire in 3phase 3wire transmission line

6 4012

What are the limiting factor for controlling maximum hot point temperature within a hydrogen and water cooled generator?

1 1599




resistance of transformer oil=?

HCL,

1 1761

What shall be minimum thickness of firewall in between two transformers and which code specifies it ?

1 12110

Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

1 1328

Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

Sun Pharma,

2 3984

what is the internal working of star delta starter

678




in a plug point why the hole size at the top is large?

TCS, Bhel,

9 6640

what is 'A' Check & 'B' Check ?

2 1674

What is single break or Double break related to MCB?

2 2537

How to convert KW to KVA or KVAR OR kvar/kva to kw?

8 51331

open circuit test when performed on double the voltage & double the freq, then what will happen with p.f and current magnitude?

Aarti Drugs,

476

what is an S.C.R. and how do they work?

GE,

4 2957

How line capacitance & line inductance varies with increase in height tower.

835


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Un-Answered Questions { Electrical Engineering }

what is the minimum pay scale for electrical engineer (building construction)in kuwait? plz revert back with yrs of experience & pay scale respectively.

734


What is the minimum underground tank size capacity considered for firefighting purpose?

548


How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me

590


What is the meaning of Insulation H for transformers????

601


how can we select the appropriate VCB ?

809


A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.

207


How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....

595


what is is the potential diffrence between two phase ?

3085


Is potential difference materials property ..? if yes tnen how.. explain brifly.

512


How to set a Zone 1 distance relay for distribution feeder?

558


When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?

191


what is the illumination level required for child play area?

591


What size cable (based on voltage drop) is required to supply a 40 A three phase boiler if the wiring system is 75V single insulated cables installed in non-metallic rigid conduit 56m from the main switchboard? Voltage drop in the consumer's mains is 8V.

504


HOW TO CALCULATE CAPACITOR BANK OR HARMONIC FILTER CALCULATION

730


i want to model paper for section engg.

616