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

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






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






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






5. Voltage Source - Conductor - Switch - Load






6. The product of voltage times current






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






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






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






10. 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






11. 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






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






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






14. V=IR.

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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. A material through which a charge does not move easily






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






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. 125 and 250 VDC.






20. 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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21. 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






22. One or more cells connected in series






23. Neutral charged particles of an atom






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






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






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






28. Any path that electrons flow through






29. 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 -






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






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






32. A device that changes mechanical energy into electricity






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






34. 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.






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






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






37. 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.






38. Atoms that have acquired an electrical charge






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






40. Temperature Controlled






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






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






43. 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.






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






45. 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 ****






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






47. 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






48. An electrode where reduction occurs






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






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