Transformers
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 14% • Most missed: “Insulated primary and secondary coils are in close proximity to each other - no …”
Transformers
Time left 00:00
25 Questions

1. When an alternating current is applied to the high-voltage (H) winding of a transformer with no load on the secondary (X) winding - a small current - called the _____ current - flows in the primary.

2. Core losses are _____ loss and _____ - _____ loss.

3. ___________ is often used in laminated cores - increases electrical resistance which decreases eddy currents

4. Determines if the transformer is a step up or step down transformer

5. The shape of the core of the transformer ensures a ______________ for the magnetic flux with maximum concentration within the core and minimum leakage of the air

6. This is the most advanced and most efficient type of tansformer; it is commonly used in x-ray equipment

7. Function of the dielectric oil

8. An electromagnetic device that operates on the principle of self induction. It uses AC.

9. Insulated primary and secondary coils are in close proximity to each other - no iron core and very innefficient

10. Instrument transformers reduce high voltages and currents to safe - usable values for the operation of _____ _____.

11. To prevent injury to personnel when servicing any equipment connected to a current transformer - the secondary winding must be ____ - _____.

12. Is concentrated in the metal core

13. The loss of power required to reverse the core magnatism each time the current reverses. This loss is caused by friction between the molecules of iron as these particles are aligned first in one direction and the in the opposite direct as current dir

14. Copper loss is known as _____ loss.

15. A system of conductors in which at least one conductors or point (usually the middle wire or neutral point of a transformer or generator windings) is intentionally grounded either solididly or through a current-limiting device.

16. _____ shows that the voltamperes of the primary of a transformer equal the voltamperes of the secondary of a transformer.

17. A transformer which when supplied from a constant potential source automatically maintans a constant current in its secondary circuit under varying conditions of load impedance. Used on series street light circuits.

18. It refers to the direction of current flow in a closed circuit.

19. Provides the ratio between the applied primary voltage and the induced secondary voltage as result of the turns ratio

20. A simple design has a core within each coil

21. Hysteresis Loss can be reduced by using a core with this feature

22. The input side that attaches to the AC supply it recieves the electrical energy or incoming voltage

23. Transformer losses are classified as _____ and _____.

24. The relationship between current and voltage in the coils are inverse

25. The winding of a transformer to which electrical energy is supplied.

⚡ Recently practiced quizzes in this topic
Live quiz activity
Electrical Engineering Interview Test Basic Electricity- Electrical Symbols Electrical Engineering - Magnetism And Electromagnetism MCQs Electrical Machines Practice Test Questions Electrical Engineering - Opamp Circuits MCQs Electrical Engineering - Rectifiers & Converters MCQs Electrical Engineering Most Important MCQs Electrical Engineering - Economics Of Power Generation MCQs Basic Electricity Review Electromagnetic Induction Circuit Practice Test
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | OSHA Basics Quiz | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.