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






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






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






4. Atoms that have acquired an electrical charge






5. 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






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






7. 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 ****






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






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






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






11. One or more cells connected in series






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






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






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. 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.






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






17. 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 -






18. Neutral charged particles of an atom






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






20. Any path that electrons flow through






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


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






23. The flow of electrons






24. 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.






25. 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.






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






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






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






29. The product of voltage times current






30. 125 and 250 VDC.






31. 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.






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






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






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






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






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


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






38. 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.






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






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






41. 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






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






43. Negatively charged particles of an atom






44. A circuit with a break in its path






45. Positively charged particles of an atom






46. 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






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






48. An electrode where free electrons are produced






49. 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






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