Discussion
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- Question
After a voltage has been applied to an inductor, the current will be ___ of its full value after 2 time constants.
Options- A. 63%
- B. 86%
- C. 95%
- D. 98%
- Correct Answer
- 86%
- 1. When current flow tries to decrease in an inductor, the magnetic field _______________ and the voltage polarity across the inductor _______________.
Options- A. collapses, remains the same
- B. expands, reverses
- C. collapses, reverses
- D. expands, remains the same Discuss
- 2. The opposition to ac by an inductor is directly proportional to ___.
Options- A. resistance
- B. reactance
- C. frequency
- D. voltage Discuss
- 3. Electromagnetic induction is the generation of _________ from __________.
Options- A. magnetism, electricity
- B. electricity, electricity
- C. electricity, magnetism
- D. magnetism, magnetism Discuss
- 4.
The inductive reactance of L2 is _____ in the given circuit.
Options- A. 3.5 kΩ
- B. 4.4 kΩ
- C. 16.3 kΩ
- D. 23.3 kΩ Discuss
- 5. ___ power represents the energy dissipated at a given point in time.
Options- A. True
- B. Reactive
- C. Real
- D. Instantaneous Discuss
- 6. An RL integrator can act as a __________ filter and an RC differentiator can act as a __________ filter.
Options- A. high-pass, high-pass
- B. low-pass, low-pass
- C. high-pass, low pass
- D. low-pass, high-pass Discuss
- 7. One of the advantages of using transformer coupling in a half-wave rectifier is that it allows the ac source to be directly connected to the load.
Options- A. True
- B. False Discuss
- 8. A zener diode can be tested with an ohmmeter.
Options- A. True
- B. False Discuss
- 9. The forward biased characteristics of a zener diode are the same as those of a diode.
Options- A. True
- B. False Discuss
- 10. If the diode in a series circuit is reverse biased, the resistor will drop all the applied voltage.
Options- A. True
- B. False Discuss
Inductors problems
Search Results
Correct Answer: collapses, reverses
Correct Answer: frequency
Correct Answer: electricity, magnetism
Correct Answer: 4.4 kΩ
Correct Answer: Instantaneous
Correct Answer: low-pass, high-pass
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: False
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