Reference no: EM132180814 , Length: word count:3000
Learning Outcomes
LO1: Apply an understanding of fundamental electrical quantities to evaluate simple circuits with constant voltages and currents. LO2: Evaluate simple circuits with sinusoidal voltages and currents.
LO3: Describe the basis of semiconductor action, and its application to simple electronic devices.
LO4: Explain the difference between digital and analogue electronics, describing simple applications of each.
Assignment Brief and Guidance
Scenario:
You are presented with the following tasks by the company where you train. The electric network company must carry out these tasks within a specified time limit and most importantly with the highest of standards and proficiency. To prove to the company that you are the right person to work for it you must carry out these tasks with utmost efficiency and professionalism and within the specified time limit. All the tasks involve solving AC and DC networks using the theory and practical experiences you acquired in your modules. All the tasks must be handed in one report which must be clearly and professionally presented.
LO1 Apply an understanding of fundamental electrical quantities to analyse simple Circuits with constant voltages and currents.
Task 1
a. Apply and plot ohms law and determine the slope of an I-V curve (Refer to the lab experiment dc on ohm's law)
b. Apply Kirchhoff's voltage and current laws to analyse the circuit in the experiment (refer to lab experiment dc on Kirchhoff's voltage and current laws).
c. Validate Kirchhoff's laws against the practical results obtained in task1 b
d. Evaluate Thevenin's theorem through simulations and through theory (refer to lab experiment dc on Thevenin theorem and maximum power transfer).
LO2 Analyse simple circuits with sinusoidal voltages and currents
Task 2
A series circuit comprises an inductor of 80 mH, a resistor of 200 ? and a capacitor of 22 uF. If a sinusoidal current of 40mA at 50hz flows in the circuit of fig 1,
a. Determine :
i. Voltage dropped across the resistor
ii. Voltage dropped across the capacitor
iii. Voltage dropped across the inductor
iv. The impedance of the circuit
v. The supply voltage
vi. The current in the circuit
vii. the phase angle
b. Draw phasor diagram for the RLC AC circuit in fig 1 and critically evaluate your results
Fig 1 RLC AC circuit
LO3 Describe the basis of semiconductor action, and its application to simple electronic devices
Task 3
a. Demonstrate the action of the following semiconductor devices.
i. Diode
ii. Zener diode
iii. Transistor as switch
b. Describe and evaluate range of discrete semiconductor devices in terms of simple semiconductor theory, suggesting appropriate applications
c. Critically evaluate the performance of Bipolar and FET transistors in terms of simple semiconductor theory, suggesting appropriate applications for each.
LO4 Explain the difference between digital and analogue electronics, describing simple applications of each
Task 4
a. Briefly describe the difference between digital and analogue electronics. Illustrate your answer with examples.
b. Determine practically the Truth table for the following combinational logic gates in Fig 2.
c. Name the logic function in each case.
Fig 2 Logic circuit
d. Describe the advantages and disadvantages of both analogue and digital electronics.
e. Explain the relative applications of both analogue and digital electronics
f. Critically evaluate the applications of analogue and digital electronics in terms of their relative advantages, explaining with examples where each might be applied