Test your basic knowledge |

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. 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






2. 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






3. The flow of electrons






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






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






6. 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






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






8. 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.






9. 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 ****






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






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






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






13. Positively charged particles of an atom






14. Neutral charged particles of an atom






15. 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 -






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


18. 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.






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






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






21. Voltage Source - Conductor - Switch - Load






22. An electrode where free electrons are produced






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






24. 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






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






26. A material in which charge moves through easily






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






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






29. Atoms that have acquired an electrical charge






30. The product of voltage times current






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






32. Any path that electrons flow through






33. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.






34. 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






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






36. 125 and 250 VDC.






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






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






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






40. 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






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






42. Temperature Controlled






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






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






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






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






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






48. One or more cells connected in series






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






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