September 2008
Beginner
834 pages
37h 13m
English
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8.13 QUESTIONS
- Express v(t) = 5 cos(ωt – 45°) – 4 sin(ωt + 30°) as a single complex exponential function.
- What should be the values of A, ω and φ if the signal v(t) = (2 + j3)ej(10t + 0.5π) + Aej(ωt + φ) is a real-valued signal?
- The current in a particular element in a linear circuit excited by a sinusoidal voltage source vS(t) = 10 cos(100t – 60°) V is found to be i(t) = 0.75 sin(100t –15°) A. (i) What is the complex amplitude of current if vS(t) = 5ej200t V? (ii) Explain why you cannot determine the complex amplitude of current when vS(t) = 5ej200t V using this data?
- Express the following signals as phasors by carrying out the addition in the phasor domain. Draw the phasor diagrams.
- x(t) = 10 sin500πt + 5 cos(500πt – π/5)
- x(t) = 7 sin(120 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.