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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. Negatively charged particles of an atom






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






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






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






5. One or more cells connected in series






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






7. 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.






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






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






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






11. V=IR.

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






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






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






15. 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






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

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17. 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.






18. A circuit with a break in its path






19. The flow of electrons






20. 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.






21. 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 ****






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






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






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






26. 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






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






28. An electrode where reduction occurs






29. Temperature Controlled






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






31. Atoms that have acquired an electrical charge






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






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






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






35. 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






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

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37. A device that changes mechanical energy into electricity






38. 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.






39. 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.






40. 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






41. 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 -






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






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






44. Voltage Source - Conductor - Switch - Load






45. 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.






46. A material in which charge moves through easily






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






48. 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.






49. Any path that electrons flow through






50. Positively charged particles of an atom