UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?
2 5081what happens when reactive power increases ? does the reactive power loss increase or decrease ?
2 5528In brushless excitation system how generator field current is measure even if the slip rings are absent?
3 7521if a single phase 3 hp submersible pump of Crompton Greaves is moving in reverse direction and sometimes it moves in rigth direction ,then what may be the cause....
2 6810Post New Electrical Engineering Questions
What is the basic principle of welding process?
how to calculate units consumption for a 12 hp motor /hr.
what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA
what are the ''pitting rings''and how cn they be controlled in a series generator
For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?
What does Bode plot tell you?
how can decide the current rating of oltc
RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV is ok ,but haw to calculate the KA rating?
how to enter inverter parameter? without manaual?
We have two parts in generator, electrical & mechanical. how it works?
While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens
What is the difference between PLC and Embeded system
i've iocl interview.. if you know the interview process please give me information..
we have a rewind motor of 2Hp,2800Rpm, 220Volt AC. how can we choose the running capacitor for this motor, any formula for that?
is the value of inductance depends upon the value of thitha in doubly excited machine??