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






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






3. 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.






4. 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.






5. MA; One thousandth of an amp.






6. 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.






7. A switch with contacts that are made with actuating force and released when that force is removed.






8. FM; ~LINK~






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






10. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.






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






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






13. Variable Frequency.






14. NFPA;






15. 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






16. Kva; One thousand volt amps.






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






18. Normally Closed.






19. ANSI;






20. Radio Frequency Interference.






21. 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(-).






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






23. Applying molecular physics to electronics.






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






25. The unit of power. One watt equals one joule per second - 1/746th horsepower.






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






27. The increase of the power level - current or voltage of a signal. In an amplifier it is the ratio of the output to the input signal levels.






28. IBEW;






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






30. Pressure that is less than atmospheric pressure.






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






32. ISA;






33. A reference point at zero potential with respect to the earth. In an electronic circuit it is the common return path for electric current. A conducting connection between the earth and an electrical circuit or electrical equipment. Also - the negativ






34. (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'






35. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.






36. Volt-ohm Meter.






37. SI; The standard metric system of units.






38. The time it takes for a controller to complete one on/off cycle.






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






40. A material used to conduct electricity or heat.






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






42. Normally Open.






43. Kwh; One thousand watt-hours.






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. UL; ~LINK~






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






47. The interaction of magnetism and electrical current.






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






49. Symbol used to denote transmitter.






50. That part of a circuit which is physically interconnected.