Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.

2951

can we use ps class in combination with protection class in differential protection and over current protection.

1 2096

What is the output of a transformer..??

Jindal,

1 3838

What device is use for metering current at lt consumer end..??

Power Grid,

2 5482

How many devices can be connected in one zone of FACP

1785

what is interference

L&T,

1 2404

What is the maximum current carrying capacity for both copper and aluminium cables for 1sqmm?

2 3548

HOW TO CALICULATE THE LEAD ACID BATTERY AH AND HOW TO FIND THE 1.2KVA UPS BACKUP @ 1000WATTS LOAD?

2 3489

WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME

1398

I HAVE 2 nO'S OF SYSTEMS, HOW MUCH UPS CAPACITY REQUIRED ALONG WITH 400WATTS ANOTHER LOAD? PLEASE GIVE THE FORMULA?

1 2901

can i connect wavetrap in 2 different phase in EHV line?

1359

what is ALF and ISF in current transformer?

1 11088

how can i use REF and diffrencial relay both in 1 CT core for transformer protection?

1363

can i connect REF and Differencial relay in 1 CT core for transformer protection?

1457

What is grid collapse? what is the reason for it?

1551


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

If o/p power is doubled by how much does the sound increase

629


why the voltage and current in a long transmission line are called travelling wave?

1774


What is the method to solve circuit using source transformation?

651


differnce between single acting and double acting solenoid valves

1394


I Want randstand placement papers

1351






Is it advantages of having star-delta vfd than normal star vfd , if yes why?

1761


what is earthing.how we make it,describe briefly.

1943


how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

1484


How to measure the Harmonic Distortion of UPS ie THD?

1731


Difference between a pilot wire and a normal conductor?

1563


What do you mean by distribution transformers?

652


Explain marx circuit.

865


how much GROUND & NEUTRAL VOLT maintain in data center.

1524


Why does the speed regulating system adopting I controller have no steady-state error? In this single closed-loop speed regulating system, when the input of the I controller Un=0, what is the output voltage of the regulator? What factors do the output voltage depend on?

1408


a starter used for squirrel cage induction motor?

1204