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. Electric current passing through an electrolyte which produces chemical changes in it.






2. A connected path to earth or to a conductive body that has a reference potential to earth.






3. 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(-).






4. A temperature scale. Also known as centigrade. Sea level water will freeze at 0






5. UL; ~LINK~






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






7. (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'






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






9. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.






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






11. NFPA;






12. The unit by which electrical resistance is measured. One ohm is equal to the current of one ampere which will flow when a voltage of one volt is applied






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






14. A meter used to measure units of volts.






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






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






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






18. Mm; One thousandth of a meter.






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






20. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>






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






22. In a three phase connection all three phases are connected in series thus forming a closed circuit.






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






24. '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.






25. Variable Frequency.






26. ISA;






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. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.






29. Kva; One thousand volt amps.






30. Radio Frequency Interference.






31. An area in which combustible or flammable mixtures are or could be present.






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






33. 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.






34. Symbol used to denote transformer.






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






36. 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.






37. Expressed in webers - it is the product of the average normal component of the magnetic intensity over a surface and the area of that surface.






38. MA; One thousandth of an amp.






39. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.






40. Ultra High Frequency






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






42. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.






43. See; 'Maximum Power Rating'.






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






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






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






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






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






49. The range of voltage needed to maintain operation of a control or device.






50. 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.







Sorry!:) No result found.

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