Civil Engineering Mechanical Engineering Chemical Engineering Networking Database Questions Computer Science Basic Electronics Digital Electronics Electronic Devices Circuit Simulation Electrical Enigneering Engineering Mechanics Technical Drawing

# Electrical Engineering - RLC Circuits and Resonance

### Exercise

"Time and tide wait for none."
- Alexander Pope
1.

A 10 resistor, a 90 mH coil, and a 0.015 F capacitor are in series across an ac source. The impedance magnitude at 1,200 Hz below fr is

 A. 1,616 B. 161 C. 3,387 D. 1,771

2.

In a series RLC circuit that is operating above the resonant frequency, the current

 A. lags the applied voltage B. leads the applied voltage C. is in phase with the applied voltage D. is zero

3.

A 15 resistor, a 220 H coil, and a 60 pF capacitor are in series across an ac source. What is the bandwidth of the circuit?

 A. 138 MHz B. 10,866 Hz C. 1,907 Hz D. 138 kHz

4.

A resistor of 3 k, a 0.05 F capacitor, and a 120 mH coil are in series across a 5 kHz, 20 V ac source. What is the impedance, expressed in polar form?

 A. 636 B. 3,769 C. 433 D. 4,337

5.

A 12 resistor, a 40 F capacitor, and an 8 mH coil are in series across an ac source. The resonant frequency is

 A. 28.1 Hz B. 281 Hz C. 2,810 Hz D. 10 kHz