Discussion
Home ‣ Electronics ‣ Inductors Comments
- Question
What is the permeability of transformer iron?
Options- A. 50
- B. 450
- C. 1,500
- D. 5,500
- Correct Answer
- 5,500
- 1. Opposition to current flow without the dissipation of energy is called:
Options- A. resistance
- B. inductive reactance
- C. counter emf
- D. impedance Discuss
- 2. Which of the following is NOT one of the three major types of fixed inductor?
Options- A. air core
- B. ferrite core
- C. magnesium core
- D. iron core Discuss
- 3. With 100 Vac applied to the primary of a transformer so that it draws 500 mA, what will be the 300 Vac secondary current?
Options- A. 1500 mA
- B. 200 mA
- C. 167 mA
- D. 150 mA Discuss
- 4. What is hysteresis?
Options- A. lead between cause and effect
- B. lag between cause and effect
- C. lead between voltage and current
- D. lag between voltage and current Discuss
- 5. A transformer will have:
Options- A. primary and secondary windings
- B. primary and secondary current
- C. primary wattage producing secondary current
- D. different frequencies for the primary and secondary Discuss
- 6. A series RL filter circuit with an output across the inductor will result in what type of filtering?
Options- A. passing of the higher frequencies
- B. passing of the lower frequencies
- C. blocking of the higher frequencies
- D. blocking of a certain range of frequencies Discuss
- 7. Which of the following represents a true equivalent of an inductor?
Options- A. An inductance in series with a resistance and a capacitance
- B. A capacitance in parallel with the series combination of a resistance and an inductance
- C. An inductance in parallel with the series combination of a resistance and a capacitance
- D. The only quality a real inductor has is inductance. Discuss
- 8. What is magnetic flux?
Options- A. the number of lines of force in webers
- B. the number of lines of force in maxwells
- C. the number of lines of force in teslas
- D. the number of lines of force in flux density Discuss
- 9. What is the total inductance, assuming no mutual inductance?
Options- A. 12 mH
- B. 6 mH
- C. 0.73 mH
- D. 0 mH Discuss
- 10. When a rate of one ampere per second causes an induced voltage of one volt, the unit of measure is
Options- A. a lenz
- B. an ohm
- C. a farad
- D. a henry Discuss
Inductors problems
Search Results
Correct Answer: inductive reactance
Correct Answer: magnesium core
Correct Answer: 167 mA
Correct Answer: lag between cause and effect
Correct Answer: primary and secondary windings
Correct Answer: passing of the higher frequencies
Correct Answer: A capacitance in parallel with the series combination of a resistance and an inductance
Correct Answer: the number of lines of force in webers
Correct Answer: 12 mH
Correct Answer: a henry
Comments
There are no comments.More in Electronics:
Programming
Copyright ©CuriousTab. All rights reserved.