HNC Unit 4019 Electrical and Electronics Principles Assignment Brief 2025

Unit 4019: Learning Outcomes

• LO1 Apply an understanding of Fundamental End electrical quantities to analyse circuits with constant voltage and cunerits. 
• L02 Analysis Simple circuits with sinusoidal voltages and currents.
• L03 Describe the basis of semiconductor action and its application to simple electronic devices.
• L04 Explain the difference between digital and analogue electronics, describing simple applications of each 

F/651/0737 Unit 4019: Assignment Brief and Guidance

Unit 4019 Scenario 1:

You are employed as an Electrical Design Engineer at East Coast College in the Estates department.You are made In-charge of the installation of electrical power systems and PLCs in tower building. In this process, your Chief Engineer has supplied you with some electrical circuit diagrams that require your detailed analysis. He requested that you fully document your methods and results in a report.

Part A:

1. A current of 13∠22.61 flows in an electrical system which is powered with a sinusoidal source of 150+j220) Using Complex number theory, calculate (a) True Power, (b) Reactive Power, and (c) the Apparent Power. Finally, show all the powers on a Power Triangle.

2. Explain the Maximum Power Transfer Theorem using The venin’s equivalent circuit using complex impedances (i.e., Source internal resistance and Load). Show in your explanation all the conditions of power transfer in The venin’s equivalent circuit.(Guided word count: 300 words). 

Part B: 

1. (a)A 110Ω resistor, a 0.02H induct or and a capacitor of 1.20uf in parallel with a circuit made up of a 120Ω resistance in series with a 2.40uf capacitor. A supply of 240V, 60Hz is connected to the circuit. Draw the circuit diagram with the given parameters. Calculate the total current taken from the supply and its phase angle. (NOTE: Use Complex numbers while solving).

2. (a) In a Series and Parallel RLC circuits,explain resonance frequency, voltage and current at resonance condition, dynamic resistance, and Q-factor with relevant formulas and phas or diagrams.(Guided word count: 300 words).

(b) A coil of inductance 0.25H and resistance 80Ω is connected in parallel with a 20µF across a 20V variable frequency supply.Calculate the following: (i) Resonant frequency. (ii) Dynamic resistance. (iii)Current at resonance (iv) the circuit Q-factor at resonance condition.

3. A 20µF capacitor is connected in series with a 50K Ω resistor, and the circuit is energized with a 20V, d. c supply. Determine: (a) Initial value of the current flowing (b) Time constant of the circuit (c) Value of the current one second after connection (d) Value of the capacitor voltage two seconds after connection (e) The time after the connection when the resistor voltage is 15V (f) The value of the capacitor voltage two seconds after 5-time constants.

Unit 4019 Scenario 2:

You are employed as an Electronics Design Engineer at East Coast Instrumentation Systems PLC. TheSales Engineer has a limited understanding of electronics. So that he has better knowledge to inform potential customers, he requested you to use your expertise to provide some detailed information on the uses of Digital and Analogue electronics and a range of electronic devices used for Analogue and Digital electronic circuits.

Part C:

Part D:

F/651/0737 Unit 4019: Learning Outcomes and Assessment Criteria: