BEEE Laboratory Academic Task 1

What is displayed by the voltmeter?

How is Thevenin resistance determined?

If the resistance is $R=2200Ω$, what value does the ammeter display under normal conditions?

What does the equation $I_1 + I_2 = I_3 + I_4 + I_5$ represent?

In which configuration is an ammeter connected in a circuit?

What will the Multimeter display in Ohms if the color bands are brown, black, orange, and gold respectively?

What is the value of a resistor with color bands yellow, violet, orange, and gold?

In the context of Thevenin's theorem, what does the Thevenin voltage represent?

How many color bands are used in a five-band resistor for color coding?

What is the first step in finding the Thevenin voltage?

Which of the following is NOT a typical operation performed on a breadboard?

What does the color code of a resistor typically indicate?

In a descriptive question, what is primarily assessed?

Multimeter and Resistor Color Codes

Multimeter displays resistance based on color bands: brown, black, orange, gold indicates specific Ohm value.
Resistor color code for 333kΩ, ± 5%: Orange, Orange, Green, Gold (using five bands).

Breadboard Connections

Breadboard allows for prototyping electronic circuits with internal connections facilitating easy adjustments.
Sketch and label internal connections for clarity in circuit design.
Apply Thevenin’s theorem by determining Thevenin resistance through proper breadboard connections.

Thevenin's Theorem

Steps for finding Thevenin voltage and resistance: identify the load, deactivate all sources, calculate the open-circuit voltage across terminals, find equivalent resistance.
Thevenin resistance determined by shorting voltage sources and opening current sources.

Circuit Measurements

Use a voltmeter to measure voltage across components, noting the displayed value in volts.
An ammeter connected in series measures current in a circuit: relevance of connection type on measurement accuracy.

Calculations

Calculation of resistance based on band colors: yellow (4), violet (7), orange (3), gold (± 5% tolerance).
For a resistor value of 2200 Ω, potential ammeter readings include 2.27 mA, 4.54 mA, 1.13 mA, or 5 A based on circuit conditions.

Circuit Analysis

Use Kirchhoff's laws to analyze current in complex circuits: I1 + I2 = I3 + I4 + I5 for given figures.
Understand series and parallel configurations to correctly interpret circuit functionality.

Negative Marking and Evaluation

Descriptive questions are unmarked negatively; however, MCQ type questions incur 25% negative marking for incorrect answers.
Focus on mastering both practical and theoretical aspects to achieve maximum marks.

This academic task focuses on questions related to the BEEE Laboratory course, designed for ECE279 students. Each question is worth two marks with specific marking schemes for descriptive and multiple-choice questions. Complete the task by drawing and answering as instructed.