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. 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






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






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






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


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


6. V=IR.


7. 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.






8. An electrode where reduction occurs






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. 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






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






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






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






14. 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






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






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






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






19. Temperature Controlled






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






21. Negatively charged particles of an atom






22. 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.






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






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






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






26. A material in which charge moves through easily






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






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






29. The product of voltage times current






30. An electrode where free electrons are produced






31. 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.






32. A circuit with a break in its path






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






34. Voltage Source - Conductor - Switch - Load






35. 125 and 250 VDC.






36. The flow of electrons






37. Atoms that have acquired an electrical charge






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






39. 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






40. 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






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






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






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






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






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






47. 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






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






49. 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 -






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