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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. V=IR.

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






4. Positively charged particles of an atom






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






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






7. Temperature Controlled






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






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






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

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11. 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






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. The product of voltage times current






14. 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.






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






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






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






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






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






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






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






22. An electrode where reduction occurs






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. 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.






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






26. Neutral charged particles of an atom






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






28. A material in which charge moves through easily






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






30. Atoms that have acquired an electrical charge






31. 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






32. A circuit with a break in its path






33. A device that changes mechanical energy into electricity






34. 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.






35. The flow of electrons






36. 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.






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






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






39. 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.






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






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






42. 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.






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






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






45. Any path that electrons flow through






46. Voltage Source - Conductor - Switch - Load






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






48. 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






49. 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.






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