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






2. A material in which charge moves through easily






3. 125 and 250 VDC.






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






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






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






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






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






9. 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.






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


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






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






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






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






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






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






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






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






19. 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






20. 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.






21. An electrode where reduction occurs






22. Temperature Controlled






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






24. 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.






25. Atoms that have acquired an electrical charge






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






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






28. Any path that electrons flow through






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






30. 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






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






32. A device that changes mechanical energy into electricity






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


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






35. An electrode where free electrons are produced






36. 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






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






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






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






40. V=IR.


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






42. Negatively charged particles of an atom






43. 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.






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






45. 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.






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






47. One or more cells connected in series






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






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






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






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