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






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






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






4. 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.






5. An electrode where reduction occurs






6. 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.






7. An electrode where free electrons are produced






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






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






10. 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.






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






12. 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.






13. The product of voltage times current






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






15. Voltage Source - Conductor - Switch - Load






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






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






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






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






20. 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






21. 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






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






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






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






25. One or more cells connected in series






26. A material in which charge moves through easily






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






28. Temperature Controlled






29. 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






30. Atoms that have acquired an electrical charge






31. A circuit with a break in its path






32. A device that changes mechanical energy into electricity






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






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






35. 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 -






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






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






38. Any path that electrons flow through






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






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






43. 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.






44. 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






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


46. Positively charged particles of an atom






47. 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 ****






48. 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






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






50. 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