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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. Temperature Controlled






2. Any path that electrons flow through






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






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






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






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






7. The product of voltage times current






8. 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.






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






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






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






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






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






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






16. Positively charged particles of an atom






17. 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






18. 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.






19. One or more cells connected in series






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






21. Voltage Source - Conductor - Switch - Load






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






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. A fundamental quantity in electricity (+ or -)






25. An electrode where free electrons are produced






26. 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.






27. Atoms that have acquired an electrical charge






28. 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 -






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






30. 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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31. 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 ****






32. 125 and 250 VDC.






33. 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.






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






35. 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.






36. 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.






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. A material through which a charge does not move easily






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






40. 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






41. 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






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






43. 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






44. Negatively charged particles of an atom






45. V=IR.

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46. 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






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






48. 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






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






50. A circuit with a break in its path