ATAT 105 - Week 10 Practice (all questions including calculative)
Capacitive and Inductive Reactance Quiz
Test your knowledge on capacitive and inductive reactance with this engaging quiz! Perfect for students and professionals alike, this quiz covers essential concepts in AC circuits, reactance, and power output.
Challenge yourself with questions that include:
- Units of capacitive reactance
- Effects of inductance and frequency on reactance
- True power output in purely capacitive and inductive circuits
What are the units used for capacitive reactance?
Mhos
Henrys
Farads
Ohms
In an AC circuit, what happens to the inductive reactance when inductance increases?
Reactance affects DC circuits only
Increases
No change
Decreases
Capacitive reactance is:
Inversely proportional to capacitance and frequency
Directly proportional to voltage and current
The same as inductive reactance
Directly proportional to capacitance and frequency
In a purely inductive circuit with no resistance, what happens to the voltage in the circuit?
Voltage leads current by 45 degrees
Current is in phase with voltage
Voltage lags current by 90 degrees
Voltage leads current by 90 degrees
Calculate the capacitive reactance of a .1uF capacitor at 400hz
26.5kohms
3.98kohms
3.9 ohms
2.51kohms
In a purely capacitive circuit:
Current leads voltage by 90 degrees
Current leads voltage by 45 degrees
Current lags voltage by 90 degrees
Current does not listen to voltage
If the frequency decreases in an AC circuit, what happens to the inductive reactance?
No change
Increases
Decreases
Reactance affects DC circuits only
In an AC circuit, what property does inductive reactance behave like?
Capacitance
Current
Resistance
Reluctance
What happens to the true power output in a purely inductive circuit?
True power is equal to voltage times current
True power is greater than apparent power
True power equals zero
True power equals apparent power
In a purely capacitive circuit with no resistance, what happens to the current in the circuit?
Current leads voltage by 90 degrees
Current lags voltage by 90 degrees
Current is in phase with voltage
Current leads voltage by 45 degrees
In a purely inductive circuit with no resistance, what happens to the current in the circuit?
Current leads voltage by 90 degrees
Current is in phase with voltage
Current lags voltage by 90 degrees
Current leads voltage by 45 degrees
In a purely inductive circuit:
Current leads voltage by 45 degrees
Current leads voltage by 90 degrees
Current does not listen to voltage
Current lags voltage by 90 degrees
How does a circuit's capacitive reactance relate to its capacitance and frequency?
Inversely proportional to both
Directly proportional to frequency
Directly proportional to both
Inversely proportional to capacitance only
What happens to the true power output in a purely capacitive circuit?
True power equals apparent power
True power is greater than apparent power
True power is equal to voltage times current
True power equals zero
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