adspace


kumaraswamy lella


{ City } chirala
< Country > india
* Profession * lecturer
User No # 107014
Total Questions Posted # 0
Total Answers Posted # 2

Total Answers Posted for My Questions # 0
Total Views for My Questions # 0

Users Marked my Answers as Correct # 15
Users Marked my Answers as Wrong # 5
Questions / { kumaraswamy lella }
Questions Answers Category Views Company eMail




Answers / { kumaraswamy lella }

Question { 6650 }

why we use 50 hz frequency in india .. why not 60 hz 


Answer

Because in India we have 3000 rpm turbines only that's reason why in India frequency is 50hz

we know that f = PN/120=2*3000/120=50hz
But in case of america..... countries they have 3600 rpm tubines so frequency is 60hz based on above formula.

Is This Answer Correct ?    10 Yes 1 No

Question { 6722 }

what is power factor?


Answer

The cosine of the angle between voltage and current in an a.c circuit is called as power factor(pf).

CosØ= R/Z
CosØ= Apparent Power / Active Power

Is This Answer Correct ?    5 Yes 4 No