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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. 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






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






3. 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






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






5. 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.






6. 125 and 250 VDC.






7. A circuit with a break in its path






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






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






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






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

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12. 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






13. The flow of electrons






14. 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






15. V=IR.

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16. An electrode where reduction occurs






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






18. 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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19. 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






20. Neutral charged particles of an atom






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






22. Temperature Controlled






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






24. An electrode where free electrons are produced






25. 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 ****






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






27. 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 -






28. One or more cells connected in series






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






30. 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.






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






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






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






34. 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






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






36. 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.






37. Positively charged particles of an atom






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






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






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






41. 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.






42. Negatively charged particles of an atom






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






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






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






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. The product of voltage times current






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






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






50. 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







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