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 insulators colour is BROWN?

1 5875

in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4

Engineers India,

2068

What is basic impulse insulation level? And how it is calculated for sub- station?

2 11816

3 phase induction motor connection star or delta while using ac drive motor is .75 to 5.5 kw

1963

For a 500 MVA 400/220/33KV transformer following data given HV power = 500 MVA IV power = 500 MVA LV power = 5 MVA If input power is 500 MVA then how output power is (500+5)MVA. Can anyone help

MEIL,

1 6858

How to calculate incomer of a capacitor bank/feeder from its KVAR, AND how to calculate the copper busbar for rated incomer,like for 400A we calculate the 40x10 of aluminum busbar.

1 7787

i seen a 132kv/11kv transformer,and thier is a sugar factorys 10MW EXPORT PLANT,MY QUESTION IS THAT WHEN THEY EXPORT ELECTRICITY THEY USE THE SAME TRANSFORMER AND THE CONNECT IT TO 132/11KV TRANSFORMERS SECONDARY SIDE CAN ANY ONE EXPLAIN IT.. THE TRANSFORMER IS OF KIRLOSKAR MAKE AND IT HAS TAP CHANGER.

1 3196

what are thw types of turbines use in biogas plant?

1951

What will happen to transformer if we gave 5HZ input instead of 50/60Hz??? explain with reason

2 4803

in fuel level controller what is MOV please define.

2 4512

what are symmetrical and non symmetrical components in electrical installation.

2080

Hi, what is 100 % stator earth fault protection and how it can be achieve by 3rd harmonics and low frequency injection principle ?

1 3955

As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.

1879

what is the difference between H.T Or HV lines...?

1 4518

As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

1776

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Un-Answered Questions { Electrical Engineering }

how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

1454

what is the reactive power what is the use of it in system

2159

how does ELR works? explain

2687

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

2815

How to Make relay co ordination chart for a Electrical power distribution of a plant

3840

Define transfer function?

1160

what kinds of Transformer oil grade is better for power transformer ?

1643

What is the simplest formula to calculate the rotor diameter of a synchronous generator?

2449

How relay works, reverse relay, master relay, os relay, earth fault relay and what is its setting point

1804

What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?

2299

If any one's require of phoenix contact like( relay , termilnal block , surge protection device ) , product please contect me 09878206357 chetan verma

2110

what are the pecularity of shaver sockets ?

1920

what & how to check the lightning arrester

1915

working of diesel generator ?

1838

what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?

2911

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