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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 circuit with a break in its path






2. 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.






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






4. An electrode where free electrons are produced






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






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






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






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. 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.






10. 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.






11. The flow of electrons






12. A device that changes mechanical energy into electricity






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






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






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






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






17. 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.






18. Negatively charged particles of an atom






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






20. Positively charged particles of an atom






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






22. 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






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






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






25. 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.






26. 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






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






29. Temperature Controlled






30. 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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31. Atoms that have acquired an electrical charge






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






33. Any path that electrons flow through






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






35. One or more cells connected in series






36. 125 and 250 VDC.






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






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






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






40. 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.






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






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






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

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44. Voltage Source - Conductor - Switch - Load






45. Neutral charged particles of an atom






46. 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






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






48. 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.






49. 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.






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