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. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.






2. 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.






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






4. NFPA;






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






6. 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






7. A process that is kept at a constant temperature.






8. The opposition to electrical flow.






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






10. See; 'Proximity Sensor'.






11. One millionth of an amp.






12. Symbol used to denote transmitter.






13. The maximum watts that a device can safely handle.






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






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






16. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~






17. 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.






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






19. A controller whose action is either fully on or off.






20. Ultra High Frequency






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






22. ISO;






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






24. The interaction of magnetism and electrical current.






25. Variable Frequency.






26. SI; The standard metric system of units.






27. Voltage; The unit of electromotive force (EMF) that causes current to flow. One volt causes a current of one amp through a resistance of one ohm.






28. 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.






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






30. NEMA;






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






32. A region of space that surrounds a moving electrical charge or a magnetic pole - in which the electrical charge or magnetic pole experiences a force that is above the electrostatic ones associated with particles at rest.






33. Radio Frequency Interference.






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






35. Pressure that is less than atmospheric pressure.






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






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






38. The pronounced curvature in reverse voltage current that is characteristic of a diode.






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






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






41. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.






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






43. A variable resistor.






44. CSA ~LINK~






45. The power of one watt operating for one hour - and equal to 3 -600 joules.






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






47. 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.






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






49. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.






50. The standard unit of magnetic flux.






Can you answer 50 questions in 15 minutes?



Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests