can some one clearly explain why -48 volt DC use in telecom site????
No Answer is Posted For this Question
Be the First to Post Answer
what are all the daily preventive maintainance carried out in transformer?
what are the specifications for Dc cables of higher rating
What is 11 N1 and 12 N2 in single phase Transformer ?
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
what effect will 10 milliampere current cause to human body ???
What is the difference between analogue electronics and digital electronics?
If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?
In winding design, the angle of chording (β) is nearly equal to A 45 degree B 60 degree C 30 degree D 90 degree
defination of a.c filter
For the same power rating,which motor is bigger in size,AC or DC?
What is main difference between earthing and neutral grounding?
how to operate and maintenance of 1500 kva diesel generator set