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






2. Atoms that have acquired an electrical charge






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






4. 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






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






6. Voltage Source - Conductor - Switch - Load






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






8. A material in which charge moves through easily






9. 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.






10. Negatively charged particles of an atom






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






12. 125 and 250 VDC.






13. 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






14. 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






15. An electrode where free electrons are produced






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






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






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






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






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






21. 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.






22. 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.






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






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






25. 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






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






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






28. 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.






29. 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 -






30. The product of voltage times current






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






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






33. 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.






34. 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






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






36. One or more cells connected in series






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 that is usually insulated but becomes conductive through the addition of an impurity






39. An electrode where reduction occurs






40. 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






41. A device that changes mechanical energy into electricity






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






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






44. A circuit with a break in its path






45. 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






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






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






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






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

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50. 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.