Figure 1. dc Circuit with Mixed Sources |
Exercise 2:
Measure the voltage across each circuit element. Is the Kirchhoff Voltage Law obeyed?
Figure 2. Driven RC Circuit |
Exercise 3:
Bring the circuit into resonance by adding an inductor of the appropriate value
in series with the elements of Exercise 2. Note the current in the circuit and the
voltage across each element as well as the voltage across the capacitor-inductor pair
as resonance is achieved.
Vary the resistor from 1000 ohm to 100 ohm to 10 ohm, noting the changes in the circuit quantities as the resistance is decreased. What is the value of the quality factor Q in each case?
Figure 3. RLC Series Circuit - Resonance? |
Exercise 4:
The inductor-resistor pair in the following circuit represents an induction motor.
Determine the current through the source.
Figure 4. Model of Induction Motor |
Add a capacitor in parallel with the motor to minimize the current through the source. Determine its value. Does the current through the motor change?
Figure 5. Reduction of Source Current |