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. Normally Closed.






2. A device that converts AC voltage to pulsating DC voltage.






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






4. A unit of electric charge. The amount of charge conveyed in one second by one ampere.






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






6. Very High Frequency.






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






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






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






10. Symbol used to denote transformer.






11. The maximum temperature at which a device can be safely operated.






12. The delayed period of time when outputs are turned off when power is initially applied.






13. MA; One thousandth of an amp.






14. A circuit which may have one or many resistors and/or other various devices connected in a series so that the current has only one path to follow.






15. The method by which two devices or systems are connected and interact with each other.






16. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.






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






18. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.






19. 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






20. The form of radiation used to make non-contact temperature measurements. In the electromagnetic spectrum it is the area beyond red light from 760 nanometers to 1000 microns.






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






22. Mm; One thousandth of a meter.






23. CSA ~LINK~






24. ISA;






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






26. The standard that is used to make comparison measurements or calibrations.






27. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.






28. A hypothetical nuclear of a quark plus an antiproton.






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






30. EPA; ~LINK~






31. IEC;






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






33. Protective circuitry to guard against spikes that might be induced on the supply line.






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






35. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.






36. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.






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






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






39. A device used to store electrical energy in an electrostatic field until discharge.






40. The measure of the ability of a material or substance to carry electrical current.






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






42. Symbol for Mega - one million.






43. Or Hertz; The measurement of the time period of one alternating electric current. In the United States this is commonly 60 cycles per second - or 60 Hertz.






44. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.






45. A material used to conduct electricity or heat.






46. An ionized gas containing about equal numbers of positive and negative charges - which is a good conductor of electricity - and is affected by a magnetic field.






47. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.






48. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.






49. 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






50. Normally Open.