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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. Shows relationship between Current - Voltage - Wattage and Resistance.
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2. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Milliampere
Voltage Drop
Magnetic Circuit
Armature
3. Total and complete opposition to the flow of electrons
Lines of Force
Impedance
Proton
Kilowatt Hour
4. The rotating member of an electrical machine.
Potential Difference
Alternator
Rotor
Volt
5. A single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of an atom.
Artificial Magnet
Voltage Drop
Valance Electron
Horsepower
6. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Watt
Static Electrical Charge
Shells
Three -Phase Circuit
7. An alternating current which current cycle begins later that its voltage cycle.
Rotor
Valance Electron
Lagging Current
Magnetic Poles
8. Opposition to current flow
Resistance
Magnetic Field
Circuit
Frequency
9. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Current
Molecule
Permeability
Rotor
10. Coil connected to the source of power on a transformer.
Primary Winding
Ampere
Armature
Volt
11. In a battery - the electrode which takes up the electrons returning from the external circuit.
Ohm
Positive Plate
Permeability
Condenser
12. 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.
Ohm's Law
Alternator
Short Circuit
Volt
13. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Electrode
Voltmeter
Electron Flow
Power
14. A resistor designed so that its resistance is readily adjusted.
Rheostat
Power
Molecule
Plates
15. A complete sequence of events - as an alternating- current cycle.
Potential Difference
Conductor
Cycle
Micro Ohm
16. The liquid solution (sometime a paste) in which the electrodes are placed.
Series Circuit
Electrolyte
Resistance
Micro Volt
17. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Magnetic Pole
Step-Up Transformer
Permeability
Horsepower
18. The space around a magnet in which the magnetic force is felt.
Magnetic Field
Condenser
Parallel Circuit
Cycle
19. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Static Electrical Charge
Electron
Factors governing the Value of EMF of a Generator
Magnetic Field
20. A unit of power.
Voltage Drop
Milliampere
Watt
Primary Cell
21. One millionth of an ohm.
Micro Ohm
Magnetic Pole
Kilowatt Hour
Armature
22. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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23. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Ohm's Law
Residual Magnetism
Magnetic Lines of Force
24. One millionth of an ampere.
Short Circuit
Electrical Circuit
Micro Ampere
Magnetic Poles
25. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Natural Magnet
Resistance
Magnetism
26. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Series - Parallel Circuit
Alternator
Short Circuit
Lines of Force
27. The difference between the electrical condition of one point in an electric circuit and that of another point which tends to cause current to flow between two points. Measured in volts.
Free Electrons
Potential Difference
Rotor
Magnetic Circuit
28. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Magnetic Circuit
Magnetic Poles
Conductor
Voltage Drop
29. A measuring device.
Fuse
Meter
'Crose Phase'
Voltmeter
30. One- thousandth of a ampere
Current
Permanent Magnet
'Crose Phase'
Milliampere
31. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Step-Up Transformer
Magnetism
Volt
Plates
32. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Permanent Magnet
Ohm's Law
Non - Magnetic Material
Electrode
33. A rate of movement of electrons through a conductor.
Wattmeter
Resistor
Electromagnetic Induction
Current
34. One- thousandth of volt.
Electric Generator
Horsepower
Millivolt
Electromagnet
35. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Rheostat
Kilowatt
Shells
Step- Down Transformer
36. The center portion of an atom which has a positive electrical charge.
Circuit
Series Circuit
Proton
Nucleus
37. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Circuit
Horsepower
Primary Winding
Free Electrons
38. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Insulator
Wattmeter
Armature
39. One millionth of a volt.
Micro Volt
Ohm
Micro Ampere
Condenser
40. One million ohms.
Rotor
Mega Ohm
Insulator
Short Circuit
41. A material with few free electrons. A structure or material used to prevent the passage of current.
Artificial Magnet
Magnetic Material
Insulator
Voltage Drop
42. The dissimilar metals which are placed in an electrolyte to form a cell.
Alternator
Rheostat
Electrode
Molecule
43. An instrument for measuring electric current
Armature
Amp Meter
Electrode
Millivolt
44. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Insulator
Leading Current
Current
45. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Electro- Motive Force
Residual Magnetism
Millivolt
Fuse
46. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Short Circuit
Parallel Circuit
Armature
Magnetic Circuit
47. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Non - Magnetic Material
Wattmeter
Magnetic Lines of Force
Molecule
48. A circuit with two or more paths for the current to take.
'Crose Phase'
Millivolt
Current
Parallel Circuit
49. A connection of circuit of low resistance. Current through each of the end- to- end devices is exactly the same. Only one path for the current.
Impedance
Atom
Ohm's Law
Series Circuit
50. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Lagging Current
Artificial Magnet
Free Electrons
Cycle