1 Practical training Topic: Calculation of electrical circuits in the phenomenon of voltage resonance. Calculation of electric circuits in the phenomenon of current resonance

VOCABULARY
Rеzоnаns – Resonance
Induktivlik - Inductance
Chаstоtа - Frequency
To`lqin o’tkаzuvchаnligi – Wave permeability
Toklar rezonansi - Current resonance
Rеaktiv o’tkаzuvchаnlik – Reactive conductivity
sig’im - capacity
to'lqin qarshiligi – wave resistance
kuchlanish rezonansi – voltage resonance


Exercises for independent solving.
Resonance of voltages

1. When the electric circuit is in resonance state and the frequency is , and resonant frequency , . Resistance parameters: va be determined Answer:

2. The resonant state currents of electrical circuits are equal to I₁ = 7A, I=3,6 A. Determine the current I₂ flowing through the inductance and create a vector expression.

Answer: I₂ = 6 A


Current resonance
1. Resonance in the given scheme
network currents are equal to I₁=4 A, I₂=3A
and determine the current I₃.
Answer: I₃=5A

2.
When the given chain parameters are C₃=10∙10^-6 F, L₂=18∙10^-3 Gn, R₂=40 Om R₃ =30 Om, determine the resonance frequency ω₀ that causes current resonance.
Answer: ω₀=1560 rаd/sеk
Test questions:

1. 
   How does the phenomenon of resonance occur in electric circuits?
   
2. 
   In order to create resonance, the electric circuit must be composed of what elements and what is the condition?
   
3. 
   In what fields was the phenomenon of resonance used in practice?
   
4. 
   Write the resonant frequency equation and explain how the resonant condition is achieved
   
5. 
   What is the resonant frequency f0 when the inductance of the oscillating circuit is L=25 MGn, and the capacitance is S=4 μF?
   
6. 
   Draw the vector expression of how voltage resonance is generated. Write the current and power equations.