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Test your basic knowledge |
Basic Electricity Vocab
Start Test
Study First
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. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Alternating Current
Lines of Force
Micro Ampere
Wattmeter
2. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.
Current
Bimetallic Strip
Proton
Wattmeter
3. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Magnetic Pole
Volt
Armature
4. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Electrode
Ohm
Parallel Circuit
Primary Cell
5. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Step-Up Transformer
Current
Fuse
6. One- thousandth of volt.
Ohm
Coulomb
Millivolt
Shells
7. The liquid solution (sometime a paste) in which the electrodes are placed.
Cycle
Secondary Cell
Voltage Drop
Electrolyte
8. Iron and certain alloys of iron which are magnetized by artificial means.
Permanent Magnet
Artificial Magnet
Leading Current
Proton
9. In an electrical circuit - or part of an electric circuit - the intensity of the current is equal to the electromotive force that drives it divided by the resistance of the circuit.
10. An alternating current which current cycle begins later that its voltage cycle.
Circuit
Lagging Current
Electro- Motive Force
Impedance
11. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Series - Parallel Circuit
Impedance
Resistor
12. A circuit with only one path for current to flow. There are no branches.
Secondary Winding
Kilowatt Hour
Series Circuit
Resistance
13. The rotating member of an electrical machine.
Electrode
Rotor
Secondary Winding
Conductor
14. A material that has many free electrons thus allowing electric current to flow through it easily.
Milliampere
Conductor
Primary Winding
Magnetic Field
15. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Primary Winding
Series Circuit
Magnetic Circuit
Static Electrical Charge
16. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Factors Governing Resistance
Primary Winding
Permanent Magnet
Magnetism
17. Negative charge of electricity
Electron
Rotor
Cycle
Series - Parallel Circuit
18. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Power
Parallel Circuit
Shells
Positive Plate
19. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Magnetic Lines of Force
Millivolt
Kilowatt Hour
Parallel Circuit
20. Term applied to the loss of voltage in forcing current through any portion of a circuit. Different factors will cause a drop; material - size - (cross - sectional area) length - temperature.
Positive Plate
Voltage Drop
Volt
Secondary Cell
21. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Lagging Current
Amp Meter
Primary Cell
22. The unit of electromotive force - potential - pressure - or voltage which produces a current of one ampere in a circuit having a resistance of 1 ohm. This is the force created to move electrons through a circuit.
Current
Electric Generator
Volt
Millivolt
23. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Kilowatt Hour
Positive Plate
Circuit
Primary Cell
24. In a battery - the electrode which takes up the electrons returning from the external circuit.
Micro Ampere
Transformer
Bound Electrons
Positive Plate
25. One million ohms.
Residual Magnetism
Cycle
Mega Ohm
Series - Parallel Circuit
26. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Impedance
Watt
Electron
Natural Magnet
27. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Leading Current
Volt
Fuse
Watt
28. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Step-Up Transformer
Milliampere
Resistance
Voltmeter
29. A complete sequence of events - as an alternating- current cycle.
Electrolyte
Series Circuit
Wattmeter
Cycle
30. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Impedance
Electro- Motive Force
Insulator
Voltmeter
31. Opposition to current flow
Resistance
Electromagnet
Secondary Winding
Potential Difference
32. A unit of POWER. 1 kilowatt = 1 -000 watts
Watt
'Crose Phase'
Kilowatt
Alternator
33. The property of a material that opposes the flow of current.
Resistance
Secondary Cell
Short Circuit
Series Circuit
34. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Armature
Electromagnetic Induction
Kilowatt Hour
Coulomb
35. A circuit with two or more paths for the current to take.
Fuse
Nucleus
Parallel Circuit
Three -Phase Circuit
36. Single POSITIVE electrical charge - located in the middle of an atom.
Secondary Winding
Series - Parallel Circuit
Condenser
Proton
37. A device used to change the voltage of an alternating current circuit.
Magnetic Circuit
Transformer
Resistance
Conductor
38. The space around a magnet in which the magnetic force is felt.
Lines of Force
Volt
Residual Magnetism
Magnetic Field
39. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Magnetic Poles
Horsepower
Positive Plate
Factors Governing Resistance
40. Total and complete opposition to the flow of electrons
Electro- Motive Force
Step-Up Transformer
Impedance
Atom
41. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Alternator
Step- Down Transformer
Natural Magnet
Wattmeter
42. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Potential Difference
Magnetic Field
Micro Ampere
Plates
43. A resistor designed so that its resistance is readily adjusted.
Magnetic Circuit
Rheostat
Meter
Ohm's Law
44. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Electrolyte
Bound Electrons
Voltage Drop
Leading Current
45. The center portion of an atom which has a positive electrical charge.
Shells
Potential Difference
Nucleus
Valance Electron
46. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Volt
Static Electrical Charge
Fuse
Secondary Winding
47. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Resistance
Electron
Armature
Micro Volt
48. The area surrounding a magnet in which magnetic properties are exhibited
Step- Down Transformer
Magnetic Field
Voltage Drop
Horsepower
49. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Magnetic Pole
Rotor
Lagging Current
Static Electrical Charge
50. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Ohm's Law
Magnetism
Series Circuit
Series Circuit