Discussion
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- Question
What is the reactive power in the given circuit?
Options- A. 0 VAR
- B. 691 µVAR
- C. 44.23 mVAR
- D. 1.45 kVAR
- Correct Answer
- 44.23 mVAR
- 1. A capacitor is constructed of two parallel:
Options- A. conductors
- B. semiconductors
- C. inductors
- D. dielectrics Discuss
- 2. Capacitive reactance values connected in series offer
Options- A. an increase in total XC
- B. a decrease in total XC
- C. no change in total XC
- D. total opposition to voltage in the circuit Discuss
- 3. When a 4.7 µF capacitor is connected to a 1 kHz source, what is its capacitive reactance?
Options- A. 4.7 ohms
- B. 29.5 ohms
- C. 34 ohms
- D. 213 ohms Discuss
- 4. What is the total opposition to current in a series RC circuit called?
Options- A. impedance
- B. inductance
- C. reactance
- D. resistance Discuss
- 5. In a capacitive circuit, current flow is limited to
Options- A. charging periods
- B. discharging periods
- C. neither charging periods nor discharging periods
- D. both charging periods and discharging periods Discuss
- 6. A capacitor's rate of charge is considered:
Options- A. magnetic
- B. a current block
- C. linear
- D. exponential Discuss
- 7. If a current of 40 mA flows through a series circuit consisting of a 0.4 µF capacitor and a resistor in series with a 4 kHz, 40 Vac source, what is the total circuit impedance?
Options- A. 10 Ω
- B. 100 Ω
- C. 1 k Ω
- D. 1 M Ω Discuss
- 8. You could increase the time constant of an RC circuit by
Options- A. adding a resistor in parallel with the circuit resistance
- B. adding a capacitor in parallel with the circuit capacitance
- C. increasing the amplitude of the input voltage
- D. exchanging the position of the resistor and capacitor in the circuit Discuss
- 9.
What is the capacitance of the circuit shown in the given circuit?
Options- A. 0.066 µF
- B. 0.9 µF
- C. 65.97 pF
- D. 900 pF Discuss
- 10. In an ac circuit, an output capacitor and a resistor are connected in series with an ac signal. What filter action will be the result?
Options- A. bandpass
- B. low-pass
- C. high-pass
- D. band-stop Discuss
Capacitors problems
Search Results
Correct Answer: conductors
Correct Answer: an increase in total XC
Correct Answer: 34 ohms
Correct Answer: impedance
Correct Answer: both charging periods and discharging periods
Correct Answer: exponential
Correct Answer: 1 k Ω
Correct Answer: adding a capacitor in parallel with the circuit capacitance
Correct Answer: 0.066 µF
Correct Answer: low-pass
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