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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. The product of voltage times current






2. 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.






3. Atoms that have acquired an electrical charge






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






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






6. 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.






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






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






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






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






11. 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






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






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






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






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






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






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






18. 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






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






20. 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






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






22. 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






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






24. 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






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






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






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






28. A circuit with a break in its path






29. 125 and 250 VDC.






30. The flow of electrons






31. Any path that electrons flow through






32. 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






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






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






35. 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






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






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






39. Positively charged particles of an atom






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






42. 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.






43. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.


44. An electrode where free electrons are produced






45. 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.






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






47. A device that changes mechanical energy into electricity






48. V=IR.


49. A material in which charge moves through easily






50. 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.