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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. 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






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






3. 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






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






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






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






7. Voltage Source - Conductor - Switch - Load






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






9. A circuit with a break in its path






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






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






12. 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.






13. 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.






14. 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.






15. Negatively charged particles of an atom






16. 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






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






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






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






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






21. 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






22. 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.






23. Atoms that have acquired an electrical charge






24. 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 ****






25. 125 and 250 VDC.






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






27. An electrode where free electrons are produced






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






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






30. 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






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






32. Positively charged particles of an atom






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






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






35. 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.






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






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


38. 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 -






39. 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






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






41. An electrode where reduction occurs






42. A material in which charge moves through easily






43. V=IR.


44. 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.






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






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






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


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






50. Temperature Controlled