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Exam 13: Rlccircuits and Resonance

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Question 21

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-Find the voltage across the capacitor in Figure 13 -1.

A) 5.37 V
B) 0.633 V
C) -4.9 V
D) 10.7 V

E) All of the above
F) B) and D)

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Question 22

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-If frequency increases in Figure 13 -1, the impedance _ and the current .

A) increases, decreases
B) decreases, increases
C) increases, increases
D) decreases, decreases

E) A) and B)
F) None of the above

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Question 23

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-If the resistance increases in Figure 13 -1, the impedance .

If a tuned tank circuit has a very narrow bandwidth, its Q is probably .

In a parallel resonant circuit, the impedance is minimum and the line current is maximum.

At resonance, a parallel RLC circuit is inductive.

-If the current is 0 A in Figure 13 -2, maybe .

If a tuned tank circuit has a very wide bandwidth, its Q might be .

A series RLC circuit can be configured for band -pass or band -stop filtering purposes.

What is the current in a parallel RLC circuit if its impedance is 0.22 MΩ, Q is 100 and VS = 50 V?

-To operate the circuit in Figure 13 -1 at resonance, frequency. the resistance and _ the

If an LC tank circuit is operating below resonance, the circuit is in nature.

Replacing the inductor in a series resonant band -pass filter with one having a lower Q value causes the bandwidth to .

-To operate the circuit in Figure 13 -1 below the resonant frequency, the frequency. _ the resistance and

What is the lower cut off frequency in an RLC resonant circuit if the inductive reactance is 1.2 kΩ, the resonant frequency is 22 kHz and the resistance is 60 Ω?

A resonant RLC circuit is said to be very selective if its Q is very low.

The total impedance equals the resistance of a resonant series RLC circuit.

What is the VOUT/VIN ratio (expressed in dB) of an RLC series resonant circuit with the output across the inductor if the resonant frequency is 14 MHz, the source voltage is 12 V and the inductor drops 300 V?

In a series resonant circuit, the impedance is minimum and the current is maximum.

What is the ratio of VOUT/VIN (expressed in dB) in an RLC series resonant circuit if the output voltage is taken across the inductor, the resonant frequency is 14 MHz, the source voltage is 18 V and the inductor drops 300 V?