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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. An electrode where free electrons are produced






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






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






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






5. 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






6. 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






7. Used to convert mechanical energy to electrical energy coupled to the turbine shaft






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






9. A device that changes mechanical energy into electricity






10. 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.






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






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

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13. Nuclear fuel is used to produce heat which is used to create steam. The steam is used to spin the turbine. The turbine shaft is connected to the generator rotor. The mechanical energy is converted to electrical energy through the generator.






14. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.






15. 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






16. The flow of electrons






17. A circuit with a break in its path






18. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared






19. Any path that electrons flow through






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






21. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.






22. Atoms that have acquired an electrical charge






23. protect your eyes and clothing. air must be circulated through the battery rooms with large stationary batteries to prevent a build-up of a combustible mixture.System cannot be grounded. First ground should do nothing.






24. 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 ****






25. 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.






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






27. V=IR.

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28. A material through which a charge does not move easily






29. An energy storage device that converts chemical energy to electricity when power is needed.






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






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






32. An electrode where reduction occurs






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






34. One or more cells connected in series






35. Requires - in part - that (1) electric power from the transmission network to the onsite distribution system shall be supplied by two physically independent circuits (not necessarily on separate rights of way) designed and located so as to minimize t






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






37. 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






38. A material in which charge moves through easily






39. An assembly of low voltage circuit breakers and/or starters used to supply individual loads of small to moderate sizes. Each feeder circuit is typically contained in a separate compartment or bucket.






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






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






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






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






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






45. Positively charged particles of an atom






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






47. Temperature Controlled






48. 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






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






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