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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. 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.






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






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






4. Atoms that have acquired an electrical charge






5. An electrode where reduction occurs






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






7. V=IR.


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






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


10. 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 ****






11. 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.






12. Any path that electrons flow through






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






14. 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






15. 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.






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






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






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


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






20. A material in which charge moves through easily






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






22. 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.






23. Temperature Controlled






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






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






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






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






28. One or more cells connected in series






29. 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






30. 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






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






32. Neutral charged particles of an atom






33. Voltage Source - Conductor - Switch - Load






34. 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 -






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






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






37. 125 and 250 VDC.






38. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.






39. A circuit with a break in its path






40. 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.






41. 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.






42. 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.






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






44. The product of voltage times current






45. 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.






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






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






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






49. Negatively charged particles of an atom






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