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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






3. 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






4. The product of voltage times current






5. The flow of electrons






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






7. A device that changes mechanical energy into electricity






8. Neutral charged particles of an atom






9. 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.






10. 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






11. 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






12. 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






13. Voltage Source - Conductor - Switch - Load






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






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






16. A circuit with a break in its path






17. An electrode where free electrons are produced






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






19. An electrode where reduction occurs






20. 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.






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






22. Any path that electrons flow through






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






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






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






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






27. 125 and 250 VDC.






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


29. Positively charged particles of an atom






30. 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






31. One or more cells connected in series






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






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






34. 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.






35. Atoms that have acquired an electrical charge






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






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






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






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






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






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






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






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






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






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






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






48. Negatively charged particles of an atom






49. 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 ****






50. 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.