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






2. 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.






3. Atoms that have acquired an electrical charge






4. Any path that electrons flow through






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






6. 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






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






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






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






10. The flow of electrons






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






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






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






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






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






16. 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.






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






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






19. Voltage Source - Conductor - Switch - Load






20. 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






21. Neutral charged particles of an atom






22. An electrode where free electrons are produced






23. 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.






24. Positively charged particles of an atom






25. Negatively charged particles of an atom






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

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






28. 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.






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






32. 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.






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






34. Used at low voltage levels (600 volts and below) to feed individual loads. These devices typically contain a thermal magnetic element which provides an inverse time tripping characteristic.






35. 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.






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






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






38. 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






39. The product of voltage times current






40. 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 -






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






42. 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






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






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






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






46. 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.






47. Temperature Controlled






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






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






50. 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