if a number of plc s are there then how many modbus to be used

1931

why does connected a indutor with mnsformeretering core of current transformer ?

2102

If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

2040

1))why we run three phase or three different circuit from a single conduit 2)) why not two circuit of different phase run in same conduit?? and why we run same three cicuit of same phae run in single conduit??

2480

what is the difference between active power and reactive power and apparant power in practical as well as theoritical

1893

what is settable hystersis protection? If any body knows plz kindly post the answer..

2008

What is the function of the generator exciter?

1365

Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?

2588

In the N-series schneider reclosers. What is the difference between current during fault time and current at tripping? This appears in the Event log in an event of a trip out.

1812

How to synchronization will be done between two DGs ?

1725

xpression 'document.FrmQF.myemail' [

1964

what mean by analog ,digital,numerical meters and relays? say the example?

2243

What are the causes for the failures of sandwich type (Al) busducts?

1817

For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is

1184

why they were using TRIAC instead relay in some controllers and what is the advantages.

1987