hi,every one, i have to write the search paper on
"performance policy optimization" of NGN (next generation
networks). i need the material on this topic. can any body
help me. please tell me any useful site where the good
material is available and name of any reference book. it
should be a great help for me.
If a manufacturer decribes a power supply transformer as
providing a secondary voltage of 24 volts when connected to
a 240 volts supply, do you think they are refering to the
full load or no load secondary voltage?
when meggering a 3ph,480v oil reservoir heater on a regen
gas compressor, why do I get a reading to ground when
meggering phase to ground? shouldn't it read opened or is
there something that makes it read closed? on the same
heater, when ohming, it reads open. thanx
One of our gas turbine generator unit "1st stage rotor
ground fault" alarm was occured several times. we tried to
measure some voltage vulue ground fault protection relay
(UNS3020a made by ABB and we measured the value of:
u+: 300 – 350mVAC
The unit still running and the alarm was reset. As of 6pm
yesterday and unitl now no alarm happened again. I our
protection relay was defective?
Pls mail me utility & Dg related question with answer
in dc suppy frequency is zero why?
if dc frequency is zero how to exist dc transients and ac
The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.
what is the reqirred voltage in HT motor to get full RPM on
no load test?
HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?
i am studying in final
year can i allowed for
23rd UES of Indian army
What is PQA???Applications........
what are problems caused by the pdu in rack server
Is it possible to download the Siemens Selection Chart(TYPE
2 coordination) for 1) fuseless selection 2)Fuse selection
What is the difference between shortcircuit current, rated
current of cable & MCB with example? What will be the size
of cable required for 5.5 KW motor (Full load current 10
Amps approx.), Starting current with DOL is 120 Amps.
Aprrox. Short circuit current with LLLG fault is 2000 Amps
Can you explain about pole discrepancy scheme
I NEED RRB SYLABUS FOR JE ELECTRICAL ,PLEASE SEND TO MY E-
MAIL ID email@example.com
can any one provide me a connection wiring diagram for a DG
set control panel along with BOM?
how to calculate earth fault relay current and CBCT ratio
While converting delta into star or star into delta ,the
three values of resistances remains unchanged .Find out the
value?Let In star R1=x;r2=x;R3=x
On converting into delta,R12=x;R23=x;R31=x Find the value of x