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






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






3. Neutral charged particles of an atom






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






5. The flow of electrons






6. 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






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






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


9. A circuit with a break in its path






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






11. 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.






12. One or more cells connected in series






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






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






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






16. A device that changes mechanical energy into electricity






17. 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






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






19. 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.






20. Voltage Source - Conductor - Switch - Load






21. 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.






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






23. 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.






24. 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






25. A material in which charge moves through easily






26. 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.






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






28. 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






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






30. Any path that electrons flow through






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






32. 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






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






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






35. An electrode where free electrons are produced






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


37. 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






38. Temperature Controlled






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






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






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






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






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






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






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






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






47. An electrode where reduction occurs






48. Atoms that have acquired an electrical charge






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






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