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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. 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.






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






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






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






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






7. Any path that electrons flow through






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






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






10. 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.






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






12. 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






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






14. A material in which charge moves through easily






15. 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






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






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






18. 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 -






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






20. 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






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






22. 125 and 250 VDC.






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






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






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






26. 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.






27. An electrode where free electrons are produced






28. 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






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






31. 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.






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






33. Voltage Source - Conductor - Switch - Load






34. 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.






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






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






37. A circuit with a break in its path






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






39. Positively charged particles of an atom






40. 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.






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






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






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






44. The flow of electrons






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

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46. One or more cells connected in series






47. 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






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






49. 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






50. 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