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The image contains a quiz for Electrical Engineering with six questions. Here's a transcription of the questions:

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**Subject Code: EEE/IAA**
**Quiz No 2**  
**September 27, 2024**  

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**Directions: Answer the following questions (Electrical Engineering)**

1. **What is the resistance of a 200 m length of copper conductor having a cross-sectional area of 0.025 cm² at 20°C?**  
   The resistivity of copper at 20°C is \( 1.7 \times 10^{-6} \, \Omega \text{-cm} \).

2. **A 500 m long transmission line has a resistance of 0.75 \(\Omega\). What current does it carry if 1700 W is dissipated in the line?**

3. **What are the voltage and angle of a system at Bus 1 of a three-bus network?**  
   Given that Bus 2 and Bus 3 are connected to Bus 1, neglect losses.

4. **Two wires (Red and Blue) having a thermal resistance of 0.24 \(\Omega\) and 0.36 \(\Omega\) are connected in: (a) series, (b) parallel. Calculate the equivalent resistance in both cases.**

5. **Explain the internal resistance of a 16 V battery when no load is connected and 14 V when a load taking 5 A is connected. Find the internal resistance of the battery.**

6. **Compare the following load-bank combinations: (10 points)**  
   Given loads: \( 5 \, \Omega \), \( 10 \, \Omega \), \( 20 \, \Omega \), \( 50 \, \Omega \) connected in:  
   (a) series and (b) parallel. Calculate and explain.

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Would you like to explore any specific problem, or should I help solve the entire set?

Here are some questions to consider further:

1. What is the significance of resistivity in calculating resistance?
2. How does the power dissipated in a transmission line relate to current and resistance?
3. What factors affect the internal resistance of a battery?
4. Why is it important to calculate equivalent resistances in both series and parallel connections?
5. How do load-bank combinations in series and parallel differ in terms of power consumption?

**Tip:** Remember, resistivity and material properties are key in determining the overall performance of electrical components.

What is the resistance of a 200 m length of copper conductor having a cross-sectional area of 0.025 cm² at 20°C? The resistivity of copper at 20°C is 1.7 × 10⁻⁶ Ω-cm.

Learn how to calculate the resistance of a 200 m copper conductor with a cross-sectional area of 0.025 cm² at 20°C. This example uses the resistivity formula and Ohm's law, commonly taught in electrical engineering courses.

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