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






2. Positively charged particles of an atom






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






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






5. 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.






6. A device that changes mechanical energy into electricity






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






8. 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






9. Temperature Controlled






10. 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.






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






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


13. Neutral charged particles of an atom






14. The product of voltage times current






15. 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






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. 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 -






18. 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






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






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






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






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






23. 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






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






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






26. 125 and 250 VDC.






27. Any path that electrons flow through






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






29. 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






30. V=IR.


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






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






33. 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 ****






34. 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






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






36. 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






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


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






39. 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.






40. 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






41. 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.






42. A circuit with a break in its path






43. An electrode where reduction occurs






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






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






46. 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.






47. 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.






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






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






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