what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?
What are the testing to be done before the installation of 1000 KVA Transformer?
In order that work may be done:(a) Two wires are necessary(b) The circuit must have a switch(c) Coal must be burnt(d) A supply of energy is required
How to size fuse? How to size MCB?
why impudance relay used for medium transmission power system? why not others?
in case of induction motor when overload condition or any short ckt. why stator winding burn not to be rotor winding
what maximum load will take a aluminum cable of 50mm 4 core.
I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)
what is the difference between high impedance & low impedance
if we know Fault level say 25 KA , How to decide busbar size for Distribution network of 1000 Amp Breaker ? Sample Calculation or Farmula Available or not ?
In an panel board if the outgoings are power plugs and motor equipments...what should we choose as the incomer of the of the panel board?? MCCB OR ISOLATOR?? Should we use ELCB protection??if so where??
What percentage netural current is in netural depend upon the phase current
what is mean by harmonics