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


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






3. 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.






4. 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






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






6. Neutral charged particles of an atom






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






8. 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






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






10. 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






11. 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.






12. Negatively charged particles of an atom






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






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






15. The product of voltage times current






16. 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.






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






18. An electrode where reduction occurs






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






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






21. An electrode where free electrons are produced






22. One or more cells connected in series






23. A material in which charge moves through easily






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






25. 125 and 250 VDC.






26. Voltage Source - Conductor - Switch - Load






27. A circuit with a break in its path






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


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






32. 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.






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






34. 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.






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






36. 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.






37. Atoms that have acquired an electrical charge






38. 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






39. 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 ****






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






41. 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






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






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






44. 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






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






46. 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






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






48. V=IR.


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






50. A device that changes mechanical energy into electricity