Discussion
Home ‣ Electrical Engineering ‣ RLC Circuits and Resonance See What Others Are Saying!
- Question
A lower Q produces a narrower bandwidth.
Options- A. True
- B. False
- Correct Answer
- False
- 1. At series resonance, the inductive reactance and capacitive reactance are never equal.
Options- A. True
- B. False Discuss
- 2. Referring to Problem 5, how long will it take the capacitor to discharge if the internal resistance of the pulse source is 100 Ω?
Options- A. 300 µs
- B. 600 µs
- C. 900 µs
- D. 1.5 ms Discuss
- 3. When the frequency of the voltage applied to a series RL circuit is increased, the phase angle
Options- A. decreases
- B. increases
- C. does not change
- D. cannot be determined without values Discuss
- 4. In an RL differentiator, when the input pulse goes from its low level to its high level,
Options- A. the inductor prevents a sudden change in voltage
- B. the inductor prevents a sudden change in current
- C. voltage across the inductor instantly reaches 63% of input voltage
- D. voltage across the inductor is zero Discuss
- 5. The same signal in Problem 2 is applied to an RC high-pass filter. If the reactance is zero at the input frequency, the output voltage is
Options- A. 18 V peak-to-peak
- B. zero
- C. 9 V peak-to-peak
- D. 12.73 V peak-to-peak Discuss
- 6. In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is
Options- A. 3 V
- B. 27 V
- C. 19.2 V
- D. 1.9 V Discuss
- 7. Six resistors are in parallel. The two lowest-value resistors are both 1.2 kΩ. The total resistance
Options- A. is less than 6 kΩ
- B. is greater than 1.2 kΩ
- C. is less than 1.2 kΩ
- D. is less than 600 Ω Discuss
- 8. The voltage induced across a certain coil is 200 mV. A 120 Ω resistor is connected to the coil terminals. The induced current is
Options- A. 1.7 mA
- B. 16 mA
- C. 12 mA
- D. 120 mA Discuss
- 9. A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current
Options- A. increases
- B. remains constant
- C. decreases
- D. ceases Discuss
- 10. A sudden increase in the total current into a parallel circuit may indicate
Options- A. a drop in source voltage
- B. an open resistor
- C. an increase in source voltage
- D. either a drop in source voltage or an open resistor Discuss
More questions
Correct Answer: False
Correct Answer: 1.5 ms
Correct Answer: increases
Correct Answer: the inductor prevents a sudden change in current
Correct Answer: 18 V peak-to-peak
Correct Answer: 19.2 V
Correct Answer: is less than 600 Ω
Correct Answer: 1.7 mA
Correct Answer: decreases
Correct Answer: an increase in source voltage
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