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Home ‣ Electrical Engineering ‣ Time Response of Reactive Circuits See What Others Are Saying!
- Question
In electronic systems, repetitive-pulse waveforms are encountered
Options- A. more often than single pulses
- B. less often than single pulses
- C. about as often as single pulses
- D. twice as often as single pulses
- Correct Answer
- more often than single pulses
- 1. When the current is 2.5 A, how many coulombs pass a point in 0.2 s?
Options- A. 12.5 C
- B. 1.25 C
- C. 0.5 C
- D. 5 C Discuss
- 2. Two inductors, L1 and L2, are in parallel. L1 has a value of 25 µH and L2 a value of 50 µH. The parallel combination is in series with L3, a 20 µH coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is
Options- A. 87 mA
- B. 870 mA
- C. 87 A
- D. 337 mA Discuss
- 3. The number 4.38 × 10?3 expressed as a number having a power of 10?6 is
Options- A. 4,380 × 10?6
- B. 438 × 10?6
- C. 43,800 × 10?6
- D. 438,000 × 10?6 Discuss
- 4. A set of Christmas tree lights is connected in parallel across a 110 V source. The filament of each light bulb is 1.8 kΩ. The current through each bulb is approximately
Options- A. 610 mA
- B. 18 mA
- C. 110 mA
- D. 61 mA Discuss
- 5. To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed
Options- A. between the second and third resistors
- B. at the negative terminal of the source
- C. between the third and fourth resistors
- D. at any point in the circuit Discuss
- 6. How much resistance is needed to draw 17.6 mA from a 12 volt source?
Options- A. 212 Ω
- B. 6.8 kΩ
- C. 68 Ω
- D. 680 Ω Discuss
- 7. Seven thousand volts can be expressed as
Options- A. 7 kV
- B. 7 MV
- C. 7 mV
- D. either 7 kV or 7 mV Discuss
- 8. A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is
Options- A. 8.57%
- B. 42.85%
- C. 4.28%
- D. 85.7% Discuss
- 9. What is the angular difference between +j4 and ?j4?
Options- A. 30°
- B. 90°
- C. 180°
- D. 270° Discuss
- 10. If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit
Options- A. doubles
- B. halves
- C. remains constant
- D. cannot be determined without values Discuss
More questions
Correct Answer: 0.5 C
Correct Answer: 870 mA
Correct Answer: 4,380 × 10?6
Correct Answer: 61 mA
Correct Answer: at any point in the circuit
Correct Answer: 680 Ω
Correct Answer: 7 kV
Correct Answer: 85.7%
Correct Answer: 180°
Correct Answer: cannot be determined without values
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