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- Question
Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is
Options- A. 16.54 V
- B. 1.65 V
- C. 10.60 V
- D. 5.93 V
- Correct Answer
- 16.54 V
- 1. One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.
Options- A. True
- B. False Discuss
- 2. A 75 Ω load uses 2 W of power. The output voltage of the power supply is approximately
Options- A. 120 V
- B. 1.2 V
- C. 12 V
- D. 6 V Discuss
- 3. A 2 kΩ resistor and a 0.002 µF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is
Options- A. 84.5 mW
- B. 845 mW
- C. 13 mW
- D. 130 mW Discuss
- 4. Three 15 mH inductors are in series. The total inductance is
Options- A. 15 mH
- B. 30 mH
- C. 45 mH
- D. 5 mH Discuss
- 5. A parallel circuit acts as a current divider.
Options- A. True
- B. False Discuss
- 6. A capacitor blocks ac but passes dc.
Options- A. True
- B. False Discuss
- 7. Current is measured in
Options- A. watts
- B. volts
- C. henries
- D. amperes Discuss
- 8. The number of kilowatts in 135 milliwatts is
Options- A. 1.35 × 10?4 kW
- B. 135 × 10?3 kW
- C. 0.0135 kW
- D. 0.00135 kW Discuss
- 9. When the current through a 12 kΩ resistor is 8 mA, the power is
Options- A. 7.68 mW
- B. 768 mW
- C. 7.68 W
- D. 76.8 W Discuss
- 10. In an RL circuit, part of the power is resistive and part is reactive.
Options- A. True
- B. False Discuss
More questions
Correct Answer: False
Correct Answer: 12 V
Correct Answer: 84.5 mW
Correct Answer: 45 mH
Correct Answer: True
Correct Answer: False
Correct Answer: amperes
Correct Answer: 1.35 × 10?4 kW
Correct Answer: 768 mW
Correct Answer: True
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