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E 213 i (mA) f=60 Hz 0 -20 (b) FIG. 13.91 Problem 29. ων

E 213 i (mA) f=60 Hz 0 -20 (b) FIG. 13.91 Problem 29. ων

Database System Concepts
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
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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?

E 213 i (mA) f=60 Hz 0 -20 (b) FIG. 13.91 Problem 29. ων
Transcribed Image Text:E 213 i (mA) f=60 Hz 0 -20 (b) FIG. 13.91 Problem 29. ων
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