last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?
1 3692We use ungrounded DC system (220V/110V) for control and protection system in substations etc. Suppose we have long 2 core DC cables running from our DCDB in control room to the load (length of around 2 to 3 km). Do we need to protect these long DC cables from earth leakages or not? If yes how?
5 11808What is the function of restraining coil in differential relay? as well as restraining current?
8 46668WHAT IS DIFFERENCE BETWEEN MANUAL CONTROL AND MAGNETIC CONTROL AND STATE ITS ADVANTAGE /DISADVANTAGE
2090what is back trip and re-trip in protection schemes? why these two? define me the exact function of these two?
1 7581What should be the length of transmission line so that we can see/obtain the full sine wave of voltage??
1903what is the purpose of the armored for the power Or control cable? How to select the type of the armored?
1 4380How you calculating the current for a 2.5 Sqmm cable. A 30 Hp 3 phase AC motor of power what size of cable is used for this motor.
7 24505Post New Siemens Electrical Engineering Interview Questions
Differentiate between Server.Transfer and Response.Redirect with functionality? Why we can choose one over the other?
What is flush method in hibernate?
How do I open iis on windows 10?
I have an instrument that involves an electronic circuit. In circuit there is a PTC B754 (having operating voltage 230V). PTC is already damaged and same PTC is not available in market. Now what can i do to solve that problem.
Why is yarn better than npm?
Define service (within R/3)?
Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB
Where test director stores its data ? Database ,Local file etc...? I need to read this data from Visual Studio 2005 c# client. Regards
What is the use of now constructor in perl?
Define dual axis.
What are the characteristics of dead stars?
Q.What are kinds of reports we used in the marketing? Q.What is call list execution?
What is GainSpan’s GS2000 Protocol for the Internet of Things (IoT)?
What is the difference between containment and delegation?
What is normalization, first normal form, second normal form, third normal form?