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. Voltage Source - Conductor - Switch - Load






2. A circuit with a break in its path






3. 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 -






4. Negatively charged particles of an atom






5. Atoms that have acquired an electrical charge






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






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






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






9. 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






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






11. 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






12. 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 ****






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






14. 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






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






16. The product of voltage times current






17. Temperature Controlled






18. 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.






19. An electrode where free electrons are produced






20. The flow of electrons






21. A material in which charge moves through easily






22. 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.






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






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






25. Any path that electrons flow through






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






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






28. 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.






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






30. 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






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






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






33. 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.






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






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






36. 125 and 250 VDC.






37. An electrode where reduction occurs






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






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






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






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


42. 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






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






44. 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






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






46. 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.






47. 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






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






49. A device that changes mechanical energy into electricity






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.