Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why insulators colour is BROWN?

1 4502

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

Engineers India,

1617

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

2 10450

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

1505

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 5751

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 6738

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 2580

what are thw types of turbines use in biogas plant?

1482

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

2 3857

in fuel level controller what is MOV please define.

2 3571

what are symmetrical and non symmetrical components in electrical installation.

1596

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

1 3157

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.

1377

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

1 3269

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.

1263


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Un-Answered Questions { Electrical Engineering }

what is the difference betweem star connected motor & delta connected motor?

1874


What is evaporator & condencer & compressor

1719


how can you calculate fault level ?

1891


What is the use of oil in transformers?

618


what is the voltage between earth & neutral in 3 phase electrical connection.

1448






what is magnetizing current test in power transformer

2150


explain wiring system

2078


what are the necessary basic electrical topics to learn for mechanical engineer to deal practical problems.

1755


75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?

3254


How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.

1254


how make megger test for control cable like 12c x 1.5mm and what it apply voltage and test timing details.

1746


What is the difference between vector surge relay (78) and Pole slip relay (98G)

631


what is negative d.c. voltage, why this voltage is used in base transciever station.

1722


WHAT IS THE WORKING PRINCIPLE OF A GENERATER.how is a GTG (Gas TURBANE Generater) working.plz explane

2047


What is the need of generator relay panel

1509