Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the difference bet ween EDO Type & MDO type ACBs, and what is the advantage EDO Type over than MDO type ACBs.


2 60413

how brushed dc motor operating ?


how brushless dc motor is operating ?

4 4908

We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power through this transformer. When we export power, the PF will be depend on GRID PF & when we import power the PF will be depend on our load PF. but the problem is that,when neither we export nor import but our 33KV vCB is in close position,our meter read the power factor 0.14 to 0.25 at that moment. So how can be we improve the power factor at that moment.

3 5190

what happens if power factor is maintained at 0.9?give me the answer in technicall way rather than telling the penality n all


5 8600

what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?



What is ac and dc drive.

1 6485

What is plc.

2 4097

What is ht lt switchgear.

Bhel, HBL Power Systems,

3 30621

What is lighting kitts.


Why use only DC supply to charge batteries why not AC Supply??

APC, Emerson,

3 6416

can any one suggest paper presentation topies for electrical engg?


1.what is the easiest way to convert AH(ampere hour)to watts?.

2 4075

1.What will be stored in online ups EPROM IC?



1.How to calculate backup time from series connected battery of 12v dc with 26Ah for 2battery?

3 8834

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???


What is trip and closing coil in cb? Why need of them


Could Please Explain briefly. Why used stabilizing resistance series with High impedance bus differential protection relay.


role of europe union in UK safety legistlation (electrical safety)


What is quadrantal symmetry?


What is Long rod insulator and it's applications..? merits over the disc insulator ..?


how can check the resistance of battery contact?


What is shunt voltage and u v voltage witch one best


what is consequences of neutral and earth connect?


What is force on a conductor in a magnetic field ?


what is difference between earthingpits,earthing grid & earthing mess?


Can anybody just suggest about the scope of Electrical design with ETAP software?Just guide me?


L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.


. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?


On Which Pressure PRV is operated.