Test your basic knowledge |

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. 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






2. Atoms that have acquired an electrical charge






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






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






5. An electrode where reduction occurs






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






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






8. 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






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






10. 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






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






12. An electrode where free electrons are produced






13. Neutral charged particles of an atom






14. A device that changes mechanical energy into electricity






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






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






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






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






19. A circuit with a break in its path






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






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






22. V=IR.


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






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






25. 125 and 250 VDC.






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






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






28. 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 -






29. 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






30. 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






31. Voltage Source - Conductor - Switch - Load






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






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






34. 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






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






36. 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






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






38. 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






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






40. The flow of electrons






41. Positively charged particles of an atom






42. 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.






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






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






45. 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






46. 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.






47. One or more cells connected in series






48. The product of voltage times current






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






50. 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.