Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013 EE for CE Course Outlines MID TERM I Dr. Basim Zafar.

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Presentation transcript:

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013 EE for CE Course Outlines MID TERM I Dr. Basim Zafar

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 2 EE for CE - MID TERM I 1.Frequency. 2.Resistance, Capacitor & Inductors in Parallel & Series. 3.Ohm’s Law. 4.Two special resistor values (Open & Short Circuit). 5.Electric Power Calculator 6.Kirchhoff’s Current & Voltage Law 7.Voltage & Current Divider 8.Circuit Analysis using KVL & KCL. 9.Linearity and Superposition 10.Thévenin’s Theorem 11.Source Transformations

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 3 1. Frequency Frequency = Number of cycles per second volt time Unit : Hertz a.Calculate the frequency of a signal b.Draw a signal with a certain frequency.

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 4 2. Resistance, Capacitor & Inductors in Parallel & Series. Calculate Resistance, Capacitor & Inductors in Parallel & Series combinations. Capacitors: Passive electronic component consisting of a pair of conductors separated by a dielectric (insulator). Measured in Farad (F) – Uses : to block DC, to filter noise, to smooth power supplies, to tune radio channels & in memories. Inductors: Passive electrical component that can store energy in a magnetic field created by the electric current passing through it. Measured in Henry (H) Uses: Resists (reacts) AC current with delay – no effect when DC is used

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 5 3. Ohm’s Law.

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 6 4. Two special resistor values (Open & Short Circuit).

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 7 5. Electric Power Calculator

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 8 6. Kirchhoff’s Current & Voltage Law Kirchhoff’s Current Law : “The sum of the current entering a node equal to the sum of the currents leaving.” Kirchhoff’s Voltage Law : “Sum of the voltage drops around a circuit equal zero.”

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide 9 7. Voltage & Current Divider

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide Circuit Analysis using KVL & KCL. To solve for all currents in more than one source circuit: 1.Count nodes minus one (possible ground) 2.Mark a current for each branch (name and direction) 3.Write KCL equations for each node 4.Count the loops 5.Write the KVL equations for each loop 6.Solve for all unknowns

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide Linearity and Superposition Linearity procedure: 1. Give to Vo any arbitrary value (e.g., V’ out =1 ) 2. Compute the resulting source value and call it V’_s 3. Use linearity. Circuit with current source set to zero(OPEN) Circuit with voltage source set to zero (SHORT CIRCUITED) SOURCE SUPERPOSITION = + Due to the linearity of the models we must have Principle of Source Superposition

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide Thévenin’s Theorem Th é venin Equivalent Circuit V Th R Th Resistive Circuit

Electrical Engineering for Civil Engineer Dr. Basim Zafar Spring 2013Slide Source Transformations