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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. 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






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






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






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






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






6. 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






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






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






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






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






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






12. 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






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






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






15. 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






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






17. 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






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






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






20. A circuit with a break in its path






21. V=IR.


22. 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.






23. 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 -






24. The product of voltage times current






25. The flow of electrons






26. 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






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






28. A material in which charge moves through easily






29. Positively charged particles of an atom






30. 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






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






32. 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.






33. 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.






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






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






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






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






38. 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.






39. 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.






40. Voltage Source - Conductor - Switch - Load






41. 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.






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






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






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






45. 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.






46. 125 and 250 VDC.






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






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






49. An electrode where free electrons are produced






50. Atoms that have acquired an electrical charge