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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 complete path - which allows for charges to move






2. An electrode where free electrons are produced






3. The product of voltage times current






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






5. A device that changes mechanical energy into electricity






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






7. 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






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






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






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

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






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






13. Voltage Source - Conductor - Switch - Load






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






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






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






18. An electrode where reduction occurs






19. Negatively charged particles of an atom






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






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






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






23. 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.






24. Neutral charged particles of an atom






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






26. Temperature Controlled






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






28. The flow of electrons






29. 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






30. A circuit with a break in its path






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






32. Atoms that have acquired an electrical charge






33. 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.






34. 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.






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






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






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






38. 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 ****






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






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






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






42. 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.






43. 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.






44. 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.






45. Any path that electrons flow through






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






47. 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






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






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






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