Test your basic knowledge |

Electrical Components

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. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.






2. A form of energy produced by the flow of particles of matter and consists of commonly attractive positively (protons [+]) and negatively (electrons [-]) charged atomic particles. A stream of electrons - or an electric current.






3. The part of a circuit that supplies power to the entire circuit or part of the circuit. Usually a separate unit that supplies power to a specific part of the circuit in a system.






4. The magnitude and time phase of a quantity - represented by a plotted line.






5. Response to the change in the level of the input signal.






6. A three mode control consisting of time Proportioning - Integral and Derivative rate action.






7. Applying molecular physics to electronics.






8. One millionth of an amp.






9. An anode (+) or cathode (-) conductor on a device through which an electric current passes.






10. OSHA;






11. Expressed in webers - it is the product of the average normal component of the magnetic intensity over a surface and the area of that surface.






12. A sudden and unwanted increase or decrease of supply voltage or current.






13. A device - instrument or component that will not produce any spark or thermal effects under any conditions that are normal or abnormal that will ignite a specified gas mixture. Electrical and thermal energy limits are at levels incapable of causing i






14. Commonly used in generators and motors - it is an electromagnet formed from a coil of insulated wire that is wound around a soft iron core.






15. A silicone semiconductor that maintains a fixed voltage in a circuit.






16. 'American Wire Gauge' system used to determine wire size.






17. Electric current passing through an electrolyte which produces chemical changes in it.






18. The speed or time rate of change of displacement.






19. (ampere)The basic unit of current in an electrical circuit. One ampere is the rate of flow of electric current when one coulomb of charge flows past a point in the circuit in one second. Symbolically characterized by the letter 'I' and sometimes 'A'






20. The unit by which electrical resistance is measured. One ohm is equal to the current of one ampere which will flow when a voltage of one volt is applied






21. MA; One thousandth of an amp.






22. The current that is gained by a transistor when it is connected in a common emitter circuit.






23. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.






24. The resistance to electrical current. Resistance is measured in ohms.






25. NFPA;






26. A full-wave rectifier where the diodes are connected in a bridge circuit. This allows the current to the load during both the positive and negative alternating of the supply voltage.






27. The time based relationship between a reference and a periodic function.






28. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).






29. LED; A solid state light source component that emits light or invisible infrared radiation.






30. One of the very small discrete packets into which many forms of energy are subdivided.






31. An electrical circuit that increases the power - voltage or current of an applied signal.






32. The element inside a vacuum tube - incandescent lamp or other similar device.






33. A meter used to measure units of volts.






34. IBEW;






35. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.






36. A circuit conductor that is grounded to become part of the electric circuit by design and intent.






37. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.






38. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.






39. A small current leaking from an output device in the off state caused by semiconductor characteristics.






40. The rate of transfer of energy.






41. The conductor that is used by intent to connect the grounded circuit of an electrical wiring system or equipment to a grounding electrode with reference to earth.






42. IEC;






43. Chemical changes and energy produced by electric currents.






44. ANSI;






45. NEMA;






46. Silicone Controlled Rectifier.






47. Kw; One thousand watts.






48. See; 'Maximum Power Rating'.






49. Output power divided by input power - (work performed in ratio to energy used to produce it).






50. A connected path to earth or to a conductive body that has a reference potential to earth.