RLC Circuits and Resonance interview question

31.

What is the total impedance of a 60 Hz series RLC circuit when XL = 7.5 ohms, XC = 265.3 ohms, and R = 33 ohms?
A.     257.8 ohms
B.     259.9 ohms
C.     290.8 ohms
D.     1989.75 ohms
Answer & Explanation

Answer: Option B

Explanation:

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32.

What is the total current for the nonideal circuit in the given circuit. If it is at resonance?

A.     0 A
B.     284 mu.gif A
C.     3.3 mA
D.     38.5 mA
Answer & Explanation

Answer: Option B

Explanation:

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33.

What is the high cutoff frequency for an RLC circuit that resonates at 2000 Hz and has a bandwidth of 250 Hz?
A.     2125 Hz
B.     2250 Hz
C.     1750 Hz
D.     8.0 Hz
Answer & Explanation

Answer: Option A

Explanation:

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34.

Current in a series RLC circuit may always be used as:
A.     a leading vector
B.     a reference
C.     an angle
D.     a lagging vector
Answer & Explanation

Answer: Option B

Explanation:

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35.

What is the impedance of the circuit?

A.     12.2 k
B.     14.5 k
C.     17.8 k
D.     20.3 k
Answer & Explanation

Answer: Option D

Explanation:

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