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






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






3. 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






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






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






6. The product of voltage times current






7. 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






8. 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 -






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






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






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






12. 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






13. A material in which charge moves through easily






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






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






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






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. Voltage Source - Conductor - Switch - Load






19. Atoms that have acquired an electrical charge






20. 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






21. 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.






22. Negatively charged particles of an atom






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






25. Positively charged particles of an atom






26. 125 and 250 VDC.






27. 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






28. 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






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






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






31. 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.






32. One or more cells connected in series






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






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






35. 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






36. Any path that electrons flow through






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


38. The flow of electrons






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






41. 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.






42. 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.






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






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






45. Neutral charged particles of an atom






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






47. A device that changes mechanical energy into electricity






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






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






50. An electrode where free electrons are produced