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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 that dissolves in water producing a solution that conducts electricity






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






3. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.






4. An electrode where free electrons are produced






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






6. One or more cells connected in series






7. A material in which charge moves through easily






8. 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






9. 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.






10. 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.






11. 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






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






13. Atoms that have acquired an electrical charge






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


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






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






17. 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.






18. The flow of electrons






19. 125 and 250 VDC.






20. 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.






21. 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.






22. 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






23. The power output from the plant is stepped up in voltage to match the grid voltage. Transformers that are used to provide offsite power to the plant (e.g. when the generator is off-line) step down the voltage.






24. Temperature Controlled






25. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.


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






27. 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






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






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






30. Neutral charged particles of an atom






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






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






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






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






36. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B






37. Negatively charged particles of an atom






38. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie






39. Changes in voltage caused by motor starts or other loads being switched onto an electrical system






40. A mechanical switching device used to either enable or interrupt current flow in a circuit. Typically provides both overload and fault protection. Is similar to a fuse; however - can be reset and reused.






41. 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






42. A circuit with a break in its path






43. 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






44. Positively charged particles of an atom






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






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






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






48. Power Systems Branch [Position] one required nuclear utilities to install degraded grid voltage relay schemes to preclude connecting safety related loads to the grid following an accident if grid voltage should be inadequate to support required opera






49. 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.






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