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Electrical Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 30 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. 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.






2. 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.






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


4. A material in which charge moves through easily






5. 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.






6. An electrode where reduction occurs






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






8. Neutral charged particles of an atom






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






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






11. V=IR.


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






13. 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.






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






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






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






17. A device that changes mechanical energy into electricity






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






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






20. The flow of electrons






21. 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






22. An electrode where free electrons are produced






23. 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






24. Atoms that have acquired an electrical charge






25. The product of voltage times current






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






28. Voltage Source - Conductor - Switch - Load






29. 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






30. Negatively charged particles of an atom






31. 125 and 250 VDC.






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






33. 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.






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


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. 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 -






37. 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.






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






39. 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.






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






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






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






43. 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






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






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






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






47. 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






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






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






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