If we have a 2000kva load,How much kvar capacitors we go to add to improve the power factor at 0.9?pls give the calculation and fully theory?
2 6428How many types of Differential protection are there? and what the special arrangement are made at the time of charging of a transformer on the Differential protection?
1 2074How to select the different contactors ( starter combination) for different AC motors? what about fuse cappacity 4 different motors too?
2 5393Post New Electrical Engineering Questions
What is Tachometer used to measure?
What are safety device in vcb and acb?
what is the star delta connetion and how can do it a three phase motor with control witing with picture
size of condotory fron voltage level
What happen to the transformer if the OLTC frequently used for lower and raise occured 50times daily?
Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV
Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above
I am applying for NTPC examination.Can we please provide previous paper to my mail prasad.chintala108340@gmail.com
List the power rating of any 5 important electrical appliances used in houses.
If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.
what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer
I HAVE A 50A MCCB AS PER DESIGN LINE WIRE CONNECT UPWORD SIDE AND LOAD IS CONNECTED TO DOWNWARD SIDE TO THE MCCB.IF NOW ANY ONE CHANGE SUPPLY & LOAD(WISEVERSA) WHAT HAPPENS ? DOES MCCB OPERATION OR WORKING FUNCTION NORMAL IF YES THAN WHY THERE ARE MARKED LINE & LOAD ON MCCB.
How they LT panel busbar size choose
What is the formula to calculate the no load current of a single & three phase induction motor
How much load can be taken for chiller from 1500 kva transformer