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






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






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






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






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






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






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






8. 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






9. 125 and 250 VDC.






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 material that dissolves in water producing a solution that conducts electricity






12. A device that changes mechanical energy into electricity






13. Atoms that have acquired an electrical charge






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






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






16. 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






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

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18. 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.






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






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






21. Positively charged particles of an atom






22. 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






23. An electrode where reduction occurs






24. 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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25. 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






26. 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.






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






28. The product of voltage times current






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






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






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






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






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






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






35. 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






36. A circuit with a break in its path






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






38. V=IR.

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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. 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 ****






41. The flow of electrons






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






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






44. Neutral charged particles of an atom






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






46. Negatively charged particles of an atom






47. 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.






48. An electrode where free electrons are produced






49. 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






50. 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.