How one can say about a device (e.g: a light holder
contains 20 or 30 L.E.Ds which glows when power supply is
off, from which source they are getting the supply.....
battery or capacitor) without removing and opening up its
case ?
capacitor only for short time operation.if u want to glow long term battery is preferable.
Is This Answer Correct ? | 0 Yes | 0 No |
Why the colour of insulator is always is chocolate in colour?
What are the test performed on A faulty transformer ?
what is the use of cable in our environment ?
what is wave traps and why it is been used in switchyards?
How to size a transformer which will supply power to 550kW,690V motor starting with VFD?
why the neutral of power transformer is always earthed?
In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?
What is thresh hold value of current?
how to understand the controling circuits example star- delta-starter controling daigram please let me know
When motor stater and roter air gap do big then what will moter.
wht d.c produces corrosion
what is the difference between real and reactive power? and what is the importance of these