What is difference between 220v/50Hz & 120V/60Hz?

Answer Posted / bilal ahmad

Basicaly Pakistan, Uk, Europ are using 50hz and have
advantage less losses in reactive and easy transmission on
high voltage and disadvantade is large size of machine and
USA,KSA have 60 hz have advantage of smal size of machine
mean low coast and disadvantage is more losses in reactve
lose and low level of transmition
but both system have some advantage and disadvantage and
both area are try to improve their disadvantage to suite
the system for future

Is This Answer Correct ?    7 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Is potential difference materials property ..? if yes tnen how.. explain brifly.

1549


A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?

4492


I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

1542


how to calculate the conductor size for certain KV transmission line and distribution line?

2027


kVA rating of ordinary transformer is increased when connected as an auto transformer because A transformation ratio increased B secondary voltage increased C energy is transferred both inductively and conductively D secondary current increased

2162






What is the two pole structure?

1431


difference between semiconductor & conductor & insulator?

1891


when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....

1268


who invented active elements? plz give me the complte details of active elements...

1428


how to calculate the cable current ratingand and how much of distance the rating will be ok will the distance is incresed what the action we take

1626


Draw a SLD of HT distribution EB grid up to users Transformer?

5672


how to find out 3 phase complex power in per unit in unbalanced system?

1588


how to revers the direction of single phase motor

485


What types of high speed CMOS circuits have you designed?

1643


what is the id1 & id2 setting in differential protection relay of CSPC?

2300