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Electrical Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A material in which charge moves through easily






2. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.






3. Negatively charged particles of an atom






4. Used in numerous applications to amplify or perform switching operations.






5. The instantaneous movement from negatively charged atoms to positively charged atoms






6. Used to supply power to large industrial and commercial facilities as well as the Retail System. lines can be compared to state highways and major roads around cities.






7. Represents the power transferred to or from capacitive and inductive elements in an AC circuit and is measured in volt-amperes reactive. Voltage and current are 90






8. An electrode where free electrons are produced






9. The flow of electrons






10. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output






11. Atoms that have acquired an electrical charge






12. Similar to switchgear except for use in low voltage versus medium voltage applications. used to supply power to motor control centers and large individual low voltage motors in some applications.






13. An electrode where reduction occurs






14. Used to isolate equipment but are typically not designed to be opened or closed while the circuit is energized (i.e. they're not designed to interrupt current). Also used in switchyard to isolate equipment






15. (analogous to flow) predominantly flows on the surface of the conductor.






16. The path of an electron in an atom or molecule






17. Temperature Controlled






18. An assembly of circuit breakers typically used to supply power to large motors and medium or low voltage transformers within the auxiliary power system. Each breaker is contained in a separate cubicle along with associated current transformers - and






19. A material that dissolves in water producing a solution that conducts electricity






20. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons






21. Used to optimize power output. Multiply by root 3.






22. Neutral charged particles of an atom






23. High voltage breakers and buses are arranged to allow power flow on the grid while isolating individual generators - transformers or transmission lines as needed. Power from the plant is delivered to the grid via the plant ****** - and the ******* se






24. A material that is usually insulated but becomes conductive through the addition of an impurity






25. A fundamental quantity in electricity (+ or -)






26. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.






27. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.






28. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.






29. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.






30. 125 and 250 VDC.






31. A circuit with a complete path - which allows for charges to move






32. Are used to provide low current circuits for use in metering - monitoring - and protective relaying applications. The turns ratio determines the amount of current that will be available in the secondary as a function of the system current on the prim






33. A condition where one or more phases have come into contact with ground or other phase(s) of the circuit - or the insulation separating them has been degraded. The current flow is only limited by the impedance between the source(s) and the ****






34. The flow of electrons (-) through a material






35. Positively charged particles of an atom






36. Are used to provide low voltage circuits for use in metering - monitoring - and protective relaying applications. The turns ratio of the transformer determines the low voltage rating as a function of the system voltage - and is often selected to be 1






37. The product of voltage times current






38. Large battery - a battery charger - and a distribution panel






39. If you are requesting service for new loads - or are making changes that affect the time when a load would operate or the amount of load -






40. Are used to supply power to smaller industrial and commercial users as well as residential customers. These lines can be compared to local roads such as the one in your local area or neighborhood - i.e. they're designed to handle the needs of local t






41. One or more cells connected in series






42. Total Current entering a junction must equal current leaving a junction


43. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators






44. A voltage source that does not change polarity such as that delivered from a battery.






45. Changes the voltage of electricity so that it can be transferred over long distances






46. A material that has no resistance to electrical current - this usually occurs near absolute zero






47. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit






48. Is a configuration used for very high current bus assemblies typically operating at generator voltage levels of 20 to 24 kV where each conductor is mounted within its own enclosure.






49. V=IR.


50. A device that changes mechanical energy into electricity