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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 Source - Conductor - Switch - Load






2. 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.






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






4. V=IR.

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






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






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






8. 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.






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






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






11. 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 ****






12. 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.






13. Atoms that have acquired an electrical charge






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






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






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






17. 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






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

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19. 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






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






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






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






23. 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.






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






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






26. 125 and 250 VDC.






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






28. The flow of electrons






29. 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.






30. One or more cells connected in series






31. The product of voltage times current






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






33. Positively charged particles of an atom






34. 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 -






35. 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






36. Any path that electrons flow through






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






38. 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






39. Temperature Controlled






40. An electrode where reduction occurs






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






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






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






44. An electrode where free electrons are produced






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






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






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






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






49. A material in which charge moves through easily






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