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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. A circuit with a break in its path






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






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






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






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






6. Any path that electrons flow through






7. Atoms that have acquired an electrical charge






8. 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.






9. 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






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






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






12. 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






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






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






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






16. 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.






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






18. One or more cells connected in series






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






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






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






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


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






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






25. 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






26. 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.






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






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






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






30. Positively charged particles of an atom






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






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






33. Negatively charged particles of an atom






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






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. 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 -






37. 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.






38. 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.






39. 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 ****






40. Neutral charged particles of an atom






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






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






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






44. 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






45. 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.






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






47. Temperature Controlled






48. An electrode where free electrons are produced






49. 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






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