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






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






3. MA; One thousandth of an amp.






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






5. 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.






6. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).






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






8. A material used to conduct electricity or heat.






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






10. The energy delivered by a circuit or device. The electrical signal produced by the input to the transducer.






11. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.






12. Variable Frequency.






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






14. Kwh; One thousand watt-hours.






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






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






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






18. EPA; ~LINK~






19. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.






20. IEEE;






21. kV; One thousand volts.






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






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






24. (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'






25. Very High Frequency.






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






27. The measured amount of electrical energy that represents the electrostatic forces between atomic particles. The nucleus of an atom has a positive charge (+) and the electrons have a negative charge(-).






28. Symbol used to denote transformer.






29. RMS; AC voltage that equals DC voltage that will do the same amount of work. For an AC sine wave it is 0.707 x peak voltage.






30. One thousandth of an inch.






31. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.






32. Symbol for Mega - one million.






33. The average temperature of a process.






34. The time delay between the output signal and the response time of the receiver of the signal.






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






36. Electrical energy produced by the action of heat.






37. 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.






38. A tube - pipe or trough that carries and protects electric wiring.






39. Pressure that is less than atmospheric pressure.






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






41. Symbol used to denote transmitter.






42. A variable resistor.






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






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






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






46. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.






47. OSHA;






48. See; 'Proximity Sensor'.






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






50. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.