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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 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.






2. The product of voltage times current






3. A material in which charge moves through easily






4. Negatively charged particles of an atom






5. A solid conductor through which a current enters or exits a medium






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






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






8. Neutral charged particles of an atom






9. The flow of electrons






10. A device that changes mechanical energy into electricity






11. 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






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

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






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






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






16. 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






17. Any path that electrons flow through






18. 125 and 250 VDC.






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






20. 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






21. A circuit with a break in its path






22. 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.






23. Positively charged particles of an atom






24. 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.






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






26. 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.






27. 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






28. One or more cells connected in series






29. 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.






30. 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






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






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






33. 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 -






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






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






36. 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






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






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






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






40. 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 ****






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






42. 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






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






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






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






47. V=IR.

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48. Temperature Controlled






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






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







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