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






2. 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






3. 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.






4. 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.






5. 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.






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






7. 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.






8. V=IR.

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9. The product of voltage times current






10. 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






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






12. Voltage Source - Conductor - Switch - Load






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

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






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






16. Temperature Controlled






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






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






19. Atoms that have acquired an electrical charge






20. One or more cells connected in series






21. Neutral charged particles of an atom






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






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






24. 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






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






26. 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 -






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






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






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






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






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






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






33. 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






34. Any path that electrons flow through






35. 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






36. The flow of electrons






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






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






39. 125 and 250 VDC.






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






41. An electrode where reduction occurs






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

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43. 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.






44. 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.






45. Negatively charged particles of an atom






46. 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






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






48. 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 ****






49. A device that changes mechanical energy into electricity






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