ELG 4125 : ELG4125-Case study 3.docx

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orangegiraffe962

14 Jul 2014

School

University of Ottawa

Department

Electrical Engineering

Course

ELG 4125

Professor

All

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Document Summary

12/10/2013: power system block diagram, design specifications of power plant. **a hydroelectric generator was used to match the criteria given for us in the question: transmission line & conductor: Guyed cross-rope: cost is a key factor as well as weight, hence the guyed cross-rope seems like the ideal transmission tower. With a voltage range of 230 735 kv, and an average weight of 5000 kg, it suits our criteria well. 40200 lbs: numbers of conductors/bundle: 3 (bundles are used to have low electric field strength at the conductor surface) To find z and y, we multiply the above values by the total distance (500 km) Z =313. 4 77. 5 & y =0. 00093 90 . Primary and secondary of the distribution system utilize either the wye-connected 3-phase circuits with multi-grounded neutrals, or the center tapped single-phase circuits with multi- grounded neutrals. For this report we will focus on the center tapped single-phase circuit: protection.

Related Questions

Q1. Consider a VLC (Visual Light Communication) system. In which LED is used as a Transmitter to send
the information and PD (Photo Detector) is used as a Receiver to decode the signal. Suppose you insert
a slowly varying information signal V(t) that is a voltage signal to the LED, which produces a time
varying light signal P(t). If the light signal is propagated through an ideal channel with no noise, it
produce a voltage signal at the PD VPD(t)= 3.5sin(20t + π/2).
1. Draw the important block diagram of the communication system.
2. Sketch or Label the IP/OP signals in the diagram.
3. Draw VPD(t)
4. Suppose that channel has an ambient light (Noise) which generated by another light source.
That noise is generated 1V DC voltage at the PD.It is a Noise and additive to the desired
signal.
Draw the block diagram of the new communication systems and Sketch or Label the IP/OP
signals in the diagram.
5. Draw VPD(t) with the additive noise.
6. Propose a method to eliminate this ambient light noise.

liyanage.chamindu

Consider a VLC (Visual Light Communication) system. In which LED is used as a Transmitter to send
the information and PD (Photo Detector) is used as a Receiver to decode the signal. Suppose you insert
a slowly varying information signal V(t) that is a voltage signal to the LED, which produces a time
varying light signal P(t). If the light signal is propagated through an ideal channel with no noise, it
produce a voltage signal at the PD VPD(t)= 3.5sin(20t + π/2).
1. Draw the important block diagram of the communication system.
2. Sketch or Label the IP/OP signals in the diagram.
3. Draw VPD(t)
4. Suppose that channel has an ambient light (Noise) which generated by another light source.
That noise is generated 1V DC voltage at the PD.It is a Noise and additive to the desired
signal.
Draw the block diagram of the new communication systems and Sketch or Label the IP/OP
signals in the diagram.
5. Draw VPD(t) with the additive noise.
6. Propose a method to eliminate this ambient light noise.

liyanage.chamindu

Figure 1 shows a system of two blocks A weighs 1800 N and B weighs 2200 N, are lying on inclined planes. The two blocks are connected by a uniform horizontal rod of weight 800 N. Determine (a) the reaction of each block on the plane surfaces (b) the compression force of the rod on blocks A and B (c) the value of force P to impend the block A upward. Take the coefficient of friction for all the surfaces as 0.3

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ELG 4125 : ELG4125-Case study 3.docx

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