Answer Posted / umar
220V/50Hz system is used in india and Pakistan while
120V/60Hz is used in KSA and USA.
The advantage of 120V over 220V is human safety factor i.e.
less insulation required and less danger of electric shock
but it has the disadvantage that the initial cost increases.
Also size of electric equipment reduces with increase in
frequency such transformers etc.
| Is This Answer Correct ? | 50 Yes | 7 No |
Post New Answer View All Answers
The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?
How much pf maintan in dg set in 6o% load,when Dg runnig Neutaal Earthing removed what happen.
What is the function of under voltage release ?
What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?
Why the output of OP-AMP is always less than Vcc?
excitation limit of an excitor
how to remover corona effect and hysteresis losses from contactor
I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok
what will happen if there is a voltage leakage or current leakage in an electrical train
where lt & ht capacitor used
how we start 40w tube light with 4 diodes,2capacitors,1 choke and without starter.(a product avilable in market which lights burnt tube lights also)
Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain
what is the difference between interconnection and intraconnections in the circuit diagrams
why do we carry out winding resistance test?
Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir
