RLC Circuits and Resonance interview question

26.

What is the bandwidth in the given circuit. If the winding resistance of the coil is 12 omega.gif?

A.     6.4 kHz
B.     47.2 kHz
C.     53.7 kHz
D.     60.2 kHz
Answer & Explanation

Answer: Option A

Explanation:

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27.

At any resonant frequency, what net voltage is measured across the two series reactive components?
A.     Applied voltage
B.     Reactive voltage
C.     Zero voltage
D.     VL + VC voltage
Answer & Explanation

Answer: Option C

Explanation:

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28.

If the bandwidth of a filter increases:
A.     Q decreases
B.     the roll-off rate increases
C.     the half-power frequency decreases
D.     the center frequency decreases
Answer & Explanation

Answer: Option A

Explanation:

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29.

Series RLC impedance or voltage totals must always be calculated by
A.     adding values vectorially
B.     graphing the angles
C.     multiplying the values
D.     subtracting the values
Answer & Explanation

Answer: Option A

Explanation:

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30.

What is the current through the capacitor in the given circuit?

A.     3.5 mA
B.     5.5 mA
C.     9 mA
D.     11.4 mA
Answer & Explanation

Answer: Option A

Explanation:

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