Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why dc is used in control circuits for MV & LV switchgeras instead of ac

1461

why dc is used in control circuit for mv & hv switchgear instead of ac

1448

what is the meaning of 0.5ohm Resistance

Vardhman,

1395

Advantage of 11KV ring main system with open point

Alam Group of Companies,

1 1927

Why Utility Distribution System in India is mainly at 11 kV? Why not Utility go for 33 kV?

1301

how we explain parallel paths armature winding?

1444

why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

Baosteel,

2378

The coils having selfinductancs 10mh and15mh,effective inductance 40mh when connected in series aiding. what will be the equivalent inductance if we connect them in series opposing?

BSNL,

1 1628

what is the Pickup/drop off ratio in BCPU relays

DNJ Energy LLC,

4149

What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer

Siemens,

1238

The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

PGVCL Paschim Gujarat Vij Company Limited,

1156

Three phase power is measured with two wattmeeter for balance three phase load.the reading of one wattmeter is zero.we can conclude that the power factor of balance load is?

1 1564

Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not

1190

How to calculate multiplying factor of dc energy meter

1194

I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.

2110


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Un-Answered Questions { Electrical Engineering }

how we do Vector group ,magnetic balance and tap changer test in Transformer?

2016


Difference between drift current and diffusion current?

1300


boiler is running in rankine cycle and deisel generator is....?

1558


What is the permissible maximum flux density in transformer core?

719


What is hipot test procedure?

996






What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

1784


what is static frequency converter?what is the function...of sfc...?

1748


In a synchronous motor. if start is running at high speed.  What will be the starting torque : Higher Lower Zero

1234


How halogen & merquery lamp works.

1668


HOW TO DESIGN THE body EARTH cable(Copper Conductor) size for 60KVA UPS?

1550


If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

3949


State the methods of improving power factor?

604


I have finish diploma electronics and five years experience in electrical field in ht service how can i get c licensce or other electrical certificate

1153


How does an induction motor start?

727


how could we know the size of cable by physical view?

1203