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






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






3. 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.






4. 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






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






6. A material in which charge moves through easily






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






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






9. Neutral charged particles of an atom






10. 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.






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






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






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






14. An electrode where reduction occurs






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






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






17. Positively charged particles of an atom






18. 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






19. 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 ****






20. Voltage Source - Conductor - Switch - Load






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






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






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






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






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






26. 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






27. 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.






28. Any path that electrons flow through






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. 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.






31. Negatively charged particles of an atom






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






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






34. 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






35. 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






36. The flow of electrons






37. 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.






38. V=IR.

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






40. An electrode where free electrons are produced






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






43. Temperature Controlled






44. A circuit with a break in its path






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






46. The product of voltage times current






47. 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.






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






50. 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