# Electrical Engineering - RLC Circuits and Resonance

### Exercise :: RLC Circuits and Resonance - General Questions

16.

To tune a parallel resonant circuit to a higher frequency, the capacitance should be

 A. increased B. decreased C. left alone D. replaced with inductance

Explanation:

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17.

In a certain series resonant circuit, VC = 125 V, VL = 125 V, and VR = 40 V. The value of the source voltage is

 A. 125 V B. 250 V C. 290 V D. 40 V

Explanation:

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18.

A certain series resonant circuit has a bandwidth of 2 kHz. If the existing coil is replaced with one having a higher value of Q, the bandwidth will

 A. increase B. remain the same C. decrease D. be less selective

Explanation:

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19.

A 9 mH coil is in parallel with a 0.015 F capacitor across an 18 kHz ac source. The coil's internal resistance, RW, is 60 . The circuit impedance is

 A. 17,340 B. 1,734 C. 290 D. 1,018 Explanation:

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20.

A 15 resistor, an inductor with 8 inductive reactance, and a capacitor with 12 capacitive reactance are in parallel across an ac voltage source. The circuit impedance is

 A. 12.7 B. 127 C. 4,436 D. 6,174 