Electrical TSUE (3 tasks)

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Uploaded: 17.05.2013
Content: 30517081748247.zip (192,56 kB)

Description

Objective 1.
Using a complex method to determine complex currents, voltages and power in all sites of the circuit shown in Fig.9.
Draw a diagram of the circuit, given the nature of the load in all its areas.
To verify the solution of the problem to make a balance of active and reactive power.
The complex system of coordinates to scale to build a vector diagram of currents and voltages circuit.
Given:
= 220; = 12 ohms; = 16 ohms; = 15 ohms; = 20 ohms; 30 ohms; 40 ohms

Examination №2.
Objective 2.
Figure 4 shows a three-phase circuit feeding two loads, one of which is connected to a star, and the other - a triangle. The system of linear voltage symmetrically.
Define:
- Phase and line currents both loads;
- Currents in the wires line supplying both the load;
- The current in the neutral conductor;
- Active and reactive power of each of the forces and the entire system;
- A scale build phasors of currents and voltages.
The problem to solve graph - analytical method
Instructions:
1. The load power factor is not unity, is active - inductive.
Given:
= 660;
The receiver is connected to the energy star
W
The receiver is connected to power triangle
W; W; W

Task 3.
Coil with active resistance and inductance in the circuit DC voltage. Record the variation of the current circuit in the transitional regime and build a curve.
Given: 200 mH =
= 50 ohms
= 440





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