Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the difference between the watt hour meter and Var hour meter in terms of internal connection and work theory . ie "When the meter records watt-hour an when the meter records var hours ??"

13 15861

how we check vector group dyn7

1 4000

when we put inducter in neuteral grounding of genrator.

3 3970

why we use sinosidal voltage / current instead of others in system?

1614

Please let me if star point(Nutral) of Delta/ Strar transformer, in 4wire (TPN+E) is tobe gruonded seperatly,inaddition to LV Panel earthing????

1 2313

Why we use three phase world wide why not four phase or five phase being used?

8 10071

What is the acceptable resistance range of UPS battery

Cisco,

2 3939

Why we can not get 100% efficiency from a Gas Generator?

1 2729

What is the meaning of BREAKING and MAKING CAPACITY in case of CIRCUIT BREAKERS.

2 6165

Can a dc motor works as a dc generator. If yes , then how?

2 4720

A long transmission line is limited by - a)thermal limited b)voltage limited c)stability limited d) L,C limited please explain with proper reason.

1 2569

A well system is when , no. of bus bar is less or more. Tell me the concept of it.

1426

what must be the mf for a meter with the following conditions. line ct ratio-100/1 line pt ratio- 220kv/110v meter pt ratio- 3X63.5V meter CT ratio- -/1 A

1 2618

why we use CVT (capacitive voltage transformer)in switch yard?

5 13802

Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . please reply..............

NTPC,

9 19979


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Un-Answered Questions { Electrical Engineering }

Pl. give me checklist for installation & commissioning of machine tool.

1732


What are the material used for inductance coil?

663


What is “pu” in electrical engineering?

651


What are all present producing cost of Per KWH of various Fuel?

2090


i want wipro vlsi placement pattern please send me

1279






types of central Air conditioner plant?

1682


which fault is severe and why?between lll fault and lllg fault which fault is severe and y?

1977


can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

1531


On 400 amp factory load how kvarh capacitors provide

1267


Explain what are inter-poles and why they are required in a dc machine.

606


how we find transformer capacity by ohm

1715


What is the automatic voltage regulator with servomotor?

1547


standard earthing rating for power line..

1645


THERMAL CAPACITANCE IS MEASURED IN..................................................

1666


What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?

2171