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






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






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. V=IR.


5. Negatively charged particles of an atom






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






7. 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






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






9. 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.






10. Neutral charged particles of an atom






11. Temperature Controlled






12. 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






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






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






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






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






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






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






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






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






21. 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 -






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






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






24. One or more cells connected in series






25. 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.






26. A material in which charge moves through easily






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






28. An electrode where reduction occurs






29. 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 ****






30. A device that changes mechanical energy into electricity






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






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


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






34. 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.






35. 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






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






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






38. 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.






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


40. 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






41. 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.






42. The flow of electrons






43. Positively charged particles of an atom






44. An electrode where free electrons are produced






45. 125 and 250 VDC.






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






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






48. 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






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






50. 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