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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. 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






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






3. 125 and 250 VDC.






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. 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






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






7. A material in which charge moves through easily






8. 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.






9. The product of voltage times current






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






11. Temperature Controlled






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






13. 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






14. A mechanical switching device used to either enable or interrupt current flow in a circuit. Typically provides both overload and fault protection. Is similar to a fuse; however - can be reset and reused.






15. Any path that electrons flow through






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






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






18. 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






19. 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






20. One or more cells connected in series






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






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






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






24. 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 -






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






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






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






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






29. Positively charged particles of an atom






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






31. 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.






32. 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.






33. Voltage Source - Conductor - Switch - Load






34. An electrode where reduction occurs






35. Negatively charged particles of an atom






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






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






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






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






40. A circuit with a break in its path






41. 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.






42. 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






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






44. V=IR.

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






46. 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






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






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






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






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