a) b) c) Draw the power triangles for Load 1, load 2, and the sum of the two power triangles. Find the total power factor of the equivalent load. Determine the value of current I,

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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**Circuit Description and Analysis**

The circuit illustrated involves two loads with the following characteristics:

- **Load 1**: Absorbs an average power of 8 kW with a leading power factor of 0.8.
- **Load 2**: Absorbs 20 kVA with a lagging power factor of 0.6.

Voltage Source:
- The voltage source provides 250 Vrms. The phase angle is specified as 0 degrees.

**Diagram Details**
- The diagram shows a parallel circuit with two loads. The current Is flows from the source, splitting into I1 and I2 through Load 1 and Load 2, respectively.

**Tasks**

a) **Draw the power triangles** for Load 1, Load 2, and the combined power triangle of the two loads.
   - The power triangle is a right triangle that represents the relationship between real power (P), reactive power (Q), and apparent power (S).

b) **Find the total power factor** of the equivalent load.
   - The power factor is the ratio of real power to apparent power, which indicates the efficiency of the power use.

c) **Determine the value of current Is**.
   - Use the formula \( I = \frac{P}{V \times \text{pf}} \) or power relationships to find the current from the given loads and power factors.

For detailed analysis, students are encouraged to calculate individually each Load's parameters, construct the power triangles using trigonometric relationships, and combine them to find the equivalent load's total power factor and supply current \( I_s \).
Transcribed Image Text:**Circuit Description and Analysis** The circuit illustrated involves two loads with the following characteristics: - **Load 1**: Absorbs an average power of 8 kW with a leading power factor of 0.8. - **Load 2**: Absorbs 20 kVA with a lagging power factor of 0.6. Voltage Source: - The voltage source provides 250 Vrms. The phase angle is specified as 0 degrees. **Diagram Details** - The diagram shows a parallel circuit with two loads. The current Is flows from the source, splitting into I1 and I2 through Load 1 and Load 2, respectively. **Tasks** a) **Draw the power triangles** for Load 1, Load 2, and the combined power triangle of the two loads. - The power triangle is a right triangle that represents the relationship between real power (P), reactive power (Q), and apparent power (S). b) **Find the total power factor** of the equivalent load. - The power factor is the ratio of real power to apparent power, which indicates the efficiency of the power use. c) **Determine the value of current Is**. - Use the formula \( I = \frac{P}{V \times \text{pf}} \) or power relationships to find the current from the given loads and power factors. For detailed analysis, students are encouraged to calculate individually each Load's parameters, construct the power triangles using trigonometric relationships, and combine them to find the equivalent load's total power factor and supply current \( I_s \).
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