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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. 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.






3. 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






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






5. 125 and 250 VDC.






6. Temperature Controlled






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






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






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






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






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






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






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






14. The flow of electrons






15. Positively charged particles of an atom






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






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






19. The product of voltage times current






20. 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.






21. 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






22. 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






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






24. Neutral charged particles of an atom






25. 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.






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






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






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






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


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






32. A device that changes mechanical energy into electricity






33. Negatively charged particles of an atom






34. 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.






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






36. An electrode where reduction occurs






37. 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






38. 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






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






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






41. An electrode where free electrons are produced






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


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






44. 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.






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






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






47. 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






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






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






50. 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