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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. Atoms that have acquired an electrical charge






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






3. One or more cells connected in series






4. 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






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






6. An electrode where free electrons are produced






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






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






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






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






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






13. The product of voltage times current






14. 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.






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






16. 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






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






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






19. 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.






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

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






22. V=IR.

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23. 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.






24. Neutral charged particles of an atom






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






26. 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 ****






27. 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.






28. Positively charged particles of an atom






29. 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






30. Voltage Source - Conductor - Switch - Load






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






32. 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






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






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






35. 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






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

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






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






39. 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






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






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






42. 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 -






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






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






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






46. 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.






47. 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.






48. 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.






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






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