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- Question
The following coils are in parallel: 75 µH, 40 µH, 25 µH, and 15 µH. The total inductance is approximately
Options- A. 6.9 µH
- B. 14 µH
- C. 2.2 µH
- D. 155 µH
- Correct Answer
- 6.9 µH
- 1. In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.
Options- A. True
- B. False Discuss
- 2. A reflective load is a load as it appears to the source in the primary of a transformer.
Options- A. True
- B. False Discuss
- 3. A transformer changes ac to dc.
Options- A. True
- B. False Discuss
- 4. Series aiding is a term sometimes used to describe voltage sources of the same polarity in series.
Options- A. True
- B. False Discuss
- 5. The number 4,500,000 can be expressed as
Options- A. 4,500 × 106
- B. 4.5 × 106
- C. 4.5 × 10-3
- D. either 4,500 × 104 or 4.5 × 106 Discuss
- 6. Two 1.5 V cells are connected series opposing across two 100 Ω resistors in series. Total current flow is
Options- A. 15 mA
- B. 5 mA
- C. 2 mA
- D. 0 A Discuss
- 7. The branch current method uses
Options- A. Kirchhoff's voltage and current laws
- B. Thevenin's theorem and Ohm's law
- C. Kirchhoff's current law and Ohm's law
- D. the superposition theorem and Thevenin's theorem Discuss
- 8. Some circuits require more than one voltage or current source.
Options- A. True
- B. False Discuss
- 9. An ohmmeter is an instrument for measuring
Options- A. current
- B. voltage
- C. resistance
- D. wattage Discuss
- 10. In a three-phase system, the voltages are separated by
Options- A. 45°
- B. 90°
- C. 120°
- D. 180° Discuss
More questions
Correct Answer: False
Correct Answer: True
Correct Answer: False
Correct Answer: True
Correct Answer: 4.5 × 106
Correct Answer: 0 A
Correct Answer: Kirchhoff's voltage and current laws
Correct Answer: True
Correct Answer: resistance
Correct Answer: 120°
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