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






2. 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






3. ANSI;






4. A material used to conduct electricity or heat.






5. A variable resistor.






6. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.






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






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






9. Output power divided by input power - (work performed in ratio to energy used to produce it).






10. 'British Thermal Unit' - the amount of thermal energy required to raise one pound of water 1degree F. One BTU is equal to .293 watt hours. One kWh is equal to 3412 BTUs.






11. 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






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






13. The mechanism of a switch which operates the contacts.






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






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






16. Volt-ohm Meter.






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






18. A form of energy produced by the flow of particles of matter and consists of commonly attractive positively (protons [+]) and negatively (electrons [-]) charged atomic particles. A stream of electrons - or an electric current.






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






20. Kva; One thousand volt amps.






21. One thousandth of an inch.






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






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






24. A rise and fall of voltage - current - or other faction that would be constant under normal conditions. A pulse that is intentionally induced will have a finite duration time.






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






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






27. A device that transfers power or energy from one system to another - such as taking a physical quality and changing it to an electrical signal.






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






29. The average temperature of a process.






30. Ultra High Frequency






31. Silicone Controlled Rectifier.






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






33. UL; ~LINK~






34. Normally Closed.






35. FM; ~LINK~






36. Electric and magnetic force field that surrounds a moving electric charge.






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






38. The opposition to electrical flow.






39. Chemical changes and energy produced by electric currents.






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






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






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






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






44. A solid-state switching device used in switching AC wave forms.






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






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






47. A three terminal semiconductor device. In a 'FET' the current is from source to drain because a conducting channel is formed by a voltage field between the gate and the source.






48. The part of a circuit that supplies power to the entire circuit or part of the circuit. Usually a separate unit that supplies power to a specific part of the circuit in a system.






49. 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.






50. A variable resistor.






?:?:)

Search BasicVersity Tests



OR

Browse BasicVersity