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while buying 30 kva on line ups for 1 phase ouput, we ave to calculate the number of batteries for 2 hours back up? how to calculate the ah rating and number of batteries
1 4032What is Surge Capacitor? Why it is require in Generator Circuit Breaker,inspite of surge arrester?
3132in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.
2338which one is more costly:single phase induction motor or 3 phase induction motor??give proper reasons..
1 3584Due to ferranti effect which power increases at the receiving end?active power or reactive power?
5 9364i have dry type transformers can you help me that how many tests i can do to know the performence of transformer and also please tell me about the BDV test and Insulation resistance test in oil cooled transformers
4 9122Why 3 over-current and 1 earth fault relay is used on primary side of transformer? Why 2 over-current and 1 earth fault relay in used on secondary side of transformer?
1 8701hi, i have 3x200KVA and 2 x 80KVA UPS with battery bank of 150AH 68Nos. and 100AH 204Nos., i need to install AC either ductable or PAC type, so can you help me to calculate heat load and capacity of the AC to install.
2722Post New Electrical Engineering Questions
What are the uses of lead compensator?
what transformer we used normally and upto which kva?
If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.
Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?
How to megger test 11 kV cable and the acceptance IR value
How to determine the breaking capacity such as break down current and break down voltage for VCB and CT's.
How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.
sail kaott diploma ece ke interviw me qus.kis parkar ke aate hai aur G.S me kya puchate hai kya sameedyaan me kis parkar ke qu.puchate hai
Can any body tell me about INNER SHUNT COMPOUND MOTOR diagram?
how do you choose the cable size as per amps rating & the voltage drop for the same.
What is MS-EXCELL?
What are diffrent type of road taxes?
While testing a ZCT what parameters have to check or measure?
Is neutral transformer can be called as control transformer?
Explain what is electric traction?
