E 213 i (mA) f=60 Hz 0 -20 (b) FIG. 13.91 Problem 29. ων
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
Write the analytical expression for the waveforms of Fig. 13.91 with the phase angle in degrees.
V(t) = Vp * sin(ωt +/- ɑ)
Vp = 20mA
ω = 2πf --> ω = 2π * 60 --> ω = 120π
Ɑ = 2π / 3 * (180/π) --> 120 --> 180o - 120o --> Ɑ = 60 degress
V(t) = 20sin(120π - 60)mA
Is this correct?
Transcribed Image Text:E
213
i (mA)
f=60 Hz
0
-20
(b)
FIG. 13.91
Problem 29.
ων
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