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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. 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






2. 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.






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






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






5. 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






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


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






8. 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.






9. 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.






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






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






12. A material in which charge moves through easily






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






14. 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






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






16. The product of voltage times current






17. An electrode where reduction occurs






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






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






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






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






22. 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.






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






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






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






26. One or more cells connected in series






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






28. Temperature Controlled






29. Atoms that have acquired an electrical charge






30. 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.






31. 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 -






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






33. Positively charged particles of an atom






34. Any path that electrons flow through






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






37. 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






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


39. The flow of electrons






40. 125 and 250 VDC.






41. V=IR.


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






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






44. 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.






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






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






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






48. An electrode where free electrons are produced






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






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