K
kaimi2005
Guest
All the following is in my text book:
Given:
V = 14.4?2 sin(100?t - 5.16o) (V)
I = 10.5?2 sin(100?t - 38.073o) (A)
The apparent power S = VI* = 14.4 × 10.5 = 151.3 VA
I am so desperate to understand why S = 151.3 (it's even different with 14.4 x 10.5 = 151.2). I can't see any approximation that can make
14.4?2 sin(100?t - 5.16o) x 10.5?2 sin(100?t - 38.073o) = 151.2
I make a copy of the full text here: http://www.flickr.com/photos/31369004@N08/2930663000/
I know its so much stupid to ask a thing like this. I should give up studying electronics instead
(
Given:
V = 14.4?2 sin(100?t - 5.16o) (V)
I = 10.5?2 sin(100?t - 38.073o) (A)
The apparent power S = VI* = 14.4 × 10.5 = 151.3 VA
I am so desperate to understand why S = 151.3 (it's even different with 14.4 x 10.5 = 151.2). I can't see any approximation that can make
14.4?2 sin(100?t - 5.16o) x 10.5?2 sin(100?t - 38.073o) = 151.2
I make a copy of the full text here: http://www.flickr.com/photos/31369004@N08/2930663000/
I know its so much stupid to ask a thing like this. I should give up studying electronics instead
(