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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. 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.






2. 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






3. Negatively charged particles of an atom






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






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






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






7. 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.






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






9. V=IR.


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






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






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






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






14. 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






15. 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.






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






17. Voltage Source - Conductor - Switch - Load






18. The product of voltage times current






19. 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.






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






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






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






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






24. 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






25. 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.






26. Any path that electrons flow through






27. An electrode where reduction occurs






28. 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






29. A circuit with a break in its path






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






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. 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.






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






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






35. 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.






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






37. One or more cells connected in series






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






39. Positively charged particles of an atom






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






41. 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






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






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






44. 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.






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






46. Atoms that have acquired an electrical charge






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






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


49. 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






50. A device that changes mechanical energy into electricity