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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. An electrode where free electrons are produced






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






3. The flow of electrons






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






5. 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






6. 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






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






8. 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






9. A circuit with a break in its path






10. 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.






11. 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.






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. 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.






14. One or more cells connected in series






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


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


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






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






19. Any path that electrons flow through






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






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






22. 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






23. 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.






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






25. A device that changes mechanical energy into electricity






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






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






28. 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.






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






30. Negatively charged particles of an atom






31. 125 and 250 VDC.






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






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






34. A material in which charge moves through easily






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






36. 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.






37. 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.






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






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






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






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






42. 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.






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






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






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






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






47. Voltage Source - Conductor - Switch - Load






48. 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






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






50. V=IR.