why in america the supply frequency is applied as 60 HZ. but in india we use 50

why in america the supply frequency is applied as 60 HZ.
but in india we use 50 HZ.

Question Posted / vikashstudy

why in america the supply frequency is applied as 60 HZ. but in india we use 50 HZ...

becoz the speed of alternator in u.s is 3600r.p.m
whereas in india is 3000r.p.m
F=(Ns*p)/120
mostly we prefer 2 pole machine,so p=2

Is This Answer Correct ?

3 Yes

0 No

More Electrical Engineering Interview Questions

Why Earth pits are inter connected

a new 3ph induction motor doesn't rotates their ratted speed, why ?

what could be the possible reasons for copper cable to have low insualation?

how to select earthing wire? procedures and parameters?

Why we use mostly circular coil in transformer? not square or rectangular type of coil.

How to calculate the voltage drop of 4 Core 50 Sqmm SWA cable for a distance of 350 mtrs and what can be the maximum load connected to it?

How the surge voltage can be arrested in electronic devices

what are the advantage and dis-advantage of 3 phase 4 wire energy meter?

cc of scorpio?

explain with the help of loading capability curve,reactive power generation and absorption from synchronous generator?

Define Current Transformer? Working & TYpe's Of C.T.

What do you mean by Stimulastion Test in Diesel Genarator / Why & when it's conducted ?

For more Electrical Engineering Interview Questions Click Here