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 3690We 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 11806What is the function of restraining coil in differential relay? as well as restraining current?
8 46660WHAT 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 7576What 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 4380Post New Siemens Interview Questions
Does java isempty check for null?
What is equ?
How is the number of passes in a sql query significant in performance evaluation?
Describe some assumptions considered important for linear regression?
how to use telugu language in vb6? any unicode data is available for telugu or not?yes means how to use? my desired output is telugu only? i am doing project like(telugu calendar),my output should be print in telugu only? pls send me the solution with code?
sir i am working consruction company.we have 4 projects in varrious places.i enter attendance in payroll by project wise.if enter autofill salaries combained all projects.i want individual salaries base on attendance feeding method.because staff are changing in one project to another project offenly.please explain method
What does || mean in vectors?
describe various programmable and non-programmable registers in 8085.
What is wood made of? Does it have a chemical composition?
Where is merge option in excel?
1. what is debenture? 2.Why company will issue shares? 3. What is audit? 4. What is the role of finance department? 5. What is mutual fund?
When we use a context?
What are G-secs?
How do u calculate Schedule variance? What is the formula? Explain with Example
what is bcp? When is it used?