In pakistan appliances work on 220v at 50hz and in us appliances work on 110v at 60hz what is basic theory to explain it
- 1 Answers
- 3082 Views
- SNGPL, I also Faced
- E-Mail Answers
Answer Posted / vikram singh
its not that technical theory..its just wot u chosen that time..like..in the begining..when power generated..at dat time..there were lack of resources and not that effective module as well..the desired freq. was considered 50-60 as transmission losses and noise and some other factors kept in mind.arc lamps were trending that time..and they woked well at 60 because lamps flicks at lower freq. so they started using 110v-60hz..and europe too..but after that 230v-50hz power also considered good..so after 2nd world war.as europe lost everything..so they just have to start with new equipments..so they chosen 230v-50hz & also india as england was ruling..and all setup was chosen by them..and so almost whole europe and asia..australia chosen this..and we cant change it now as we we have to change all equipments and that costs very high..so its goin on.. hope this helped u :)
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
What is star-delta transformer?
Define closed loop control system.
describe the phenomena of vacuum interruption in C.B
Why do we avoid electrical conduits in floors at apartments?
Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.
what is buffer resistance starter.?.What is the working principle and where it is used..?
What is speed mode?
5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
What is the difference between diesel generator engine with and without turbo charger with the same capacity?
How to select transmission line type (i.e. 11kv or 33kv) for new established industries
I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.
3 phase induction motor connection star or delta while using ac drive motor is .75 to 5.5 kw
What is the minimum IR value of HT/ LT cable? Pls post separetely!!!!!
