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






2. A variable resistor.






3. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.






4. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.






5. A meter used to measure electrical resistance in units of ohms.






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






7. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.






8. NEC: A set of regulations pertaining to electrical installation and design in the interest of the protection of life and property. The NEC is adopted by NFPA and approved by ANSI. It is the preferred standard of guidelines used by most electrical reg






9. Applying molecular physics to electronics.






10. IEEE;






11. A switch in a controller that manually resets after exceeding the controllers limit.






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






13. Pounds per square inch differential. The difference in pressure between two points.






14. The act of the opening of an electrical circuit.






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






16. UL; ~LINK~






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






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






19. A variable resistor.






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






21. One thousandth of an inch.






22. Radio Frequency Interference.






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






24. In a three phase connection all three phases are connected in series thus forming a closed circuit.






25. MV; One thousandth of a volt. The difference in potential needed to cause a current of one milliampere flow through a resistance of one ohm.






26. See; 'Proximity Sensor'.






27. Non-conducting material used to isolate and/or insulate energized electrical components.






28. The difference in potential measured between two points caused by resistance or impedance.






29. An interconnected arrangement of parts for carrying high-voltage electricity.






30. Symbol for Mega - one million.






31. The amount of power that is consumed and converted to heat.






32. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.






33. Inspection - analysis and action required to ensure quality of output.






34. Symbol used for wye configuration for three phase electrical connections.






35. (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'






36. The output that is produced when one or more inputs are present.






37. 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






38. A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circu






39. A fluctuation in the intensity of a steady current.






40. The modification of a signal that causes the output to remain energized until it is released by intent.






41. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.






42. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.






43. The amount of time it takes for a device to react to an input signal.






44. 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.






45. The quality of having the ability to emit light when struck by electrons or another form of radiation.






46. ANSI;






47. A unit of electrical current named after French physicist Andr






48. Silicone Controlled Rectifier.






49. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.






50. An area in which combustible or flammable mixtures are or could be present.