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23 Cards in this Set
- Front
- Back
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Which of the following electrical characterisitics determines the magnitude of inductive reactance?
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Frequency and Inductance
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In an an AC circuit, how does inductive reactance respond to an increase in applied frequency?
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Inductive Reactance increases
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What term describes the opposition to ac that causes current to lead voltage?
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Capacitive reactance
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In an ac circuit, how does capacitive reactance respond to an increase in applied frequency?
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Capacitive reactance decreases
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In an ac circuit, what is the term that describes the total opposition to current flow?
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Impedance
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When an ac circuit is at resonance, what is the relationship between XL and XC?
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XL is equal to XC
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In a resonant circuit, what is the phase angle between voltage and current?
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180 degrees
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In a series-LC circuit, which of the following compoinent characteristics describes circuit action (a) below the resonant frequency and (b) above the resonant frequency?
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a) Capacitive
b) Inductive |
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The ability of a resonant circuit to separate currents of desired frequencies from those of undesired frequencies makes them useful in which of the following circuit applications?
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Filters
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The Q of a circuit is the measure of circuit _______.
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Quality
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Which of the following electrical characterisitics determines the magnitude of inductive reactance?
|
Frequency and Inductance
|
|
|
In an an AC circuit, how does inductive reactance respond to an increase in applied frequency?
|
Inductive Reactance increases
|
|
|
What term describes the opposition to ac that causes current to lead voltage?
|
Capacitive reactance
|
|
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In an ac circuit, how does capacitive reactance respond to an increase in applied frequency?
|
Capacitive reactance decreases
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|
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In an ac circuit, what is the term that describes the total opposition to current flow?
|
Impedance
|
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When an ac circuit is at resonance, what is the relationship between XL and XC?
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XL is equal to XC
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In a resonant circuit, what is the phase angle between voltage and current?
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180 degrees
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In a series-LC circuit, which of the following compoinent characteristics describes circuit action (a) below the resonant frequency and (b) above the resonant frequency?
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a) Capacitive
b) Inductive |
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The ability of a resonant circuit to separate currents of desired frequencies from those of undesired frequencies makes them useful in which of the following circuit applications?
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Filters
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The Q of a circuit is the measure of circuit _______.
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Quality
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Which of the following circuit values has the greatest effect on the figure of merit of the circuit?
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Resistance
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In a parallel-resonant circuit, Q is used to figure which of the following circuit values?
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Circulating tank current
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The action of a filter circuit that reduces the amplitude of unwanted frequencies below the amplitude of the diesired frequency is known as _____
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Attenuation
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