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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. Temperature Controlled






2. Any path that electrons flow through






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






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






5. An electrode where reduction occurs






6. 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






7. The flow of electrons






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






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






10. 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






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






12. 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 -






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






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






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






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


17. Positively charged particles of an atom






18. 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.






19. 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






20. 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






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






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






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






24. A circuit with a break in its path






25. 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






26. 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.






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






28. 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.






29. 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.






30. Neutral charged particles of an atom






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






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






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






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






35. Voltage Source - Conductor - Switch - Load






36. 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






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






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






39. The product of voltage times current






40. 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.






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






42. One or more cells connected in series






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






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






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






46. A material in which charge moves through easily






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






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






49. 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 ****






50. Atoms that have acquired an electrical charge