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


2. V=IR.


3. Voltage Source - Conductor - Switch - Load






4. 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.






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






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






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


8. Neutral charged particles of an atom






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






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






12. Any path that electrons flow through






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






14. A circuit with a break in its path






15. Temperature Controlled






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






17. 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.






18. One or more cells connected in series






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






20. 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.






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






22. 125 and 250 VDC.






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






24. 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






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






26. 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






27. 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.






28. 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






29. 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.






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






31. 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 -






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






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






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






35. 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






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






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






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






39. 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.






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






41. Negatively charged particles of an atom






42. 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






43. Atoms that have acquired an electrical charge






44. Is a configuration used for very high current bus assemblies typically operating at generator voltage levels of 20 to 24 kV where each conductor is mounted within its own enclosure.






45. The product of voltage times current






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






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






48. A material in which charge moves through easily






49. 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






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