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Test your basic knowledge |
Basic Electricity Vocab
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Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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 measuring device.
Milliampere
Electrical Circuit
Meter
Plates
2. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Mega Ohm
Magnetic Circuit
Bound Electrons
Kilowatt
3. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Magnetic Material
Impedance
Wattmeter
Fuse
4. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Parallel Circuit
Ohm
Electron
Horsepower
5. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Mega Ohm
Coulomb
Free Electrons
Power
6. A material which can be magnetized - principally iron.
Parallel Circuit
Magnetic Material
'Crose Phase'
Magnetic Field
7. Negative charge of electricity
Bound Electrons
Magnetic Circuit
Meter
Electron
8. Smallest part a substance can physically divided into composed of 2 or more atoms.
Step-Up Transformer
Molecule
Coulomb
Meter
9. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Power
Magnetic Lines of Force
Ohm
'Crose Phase'
10. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Resistance
Static Electrical Charge
Magnetic Field
Electron
11. Single POSITIVE electrical charge - located in the middle of an atom.
Parallel Circuit
Proton
Kilowatt Hour
Rotor
12. A circuit with more than one path. Current branches to flow in every available path.
Valance Electron
Storage Battery
Factors governing the Value of EMF of a Generator
Parallel Circuit
13. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Mega Ohm
Electromagnet
Voltage Drop
Static Electrical Charge
14. The space around a magnet in which the magnetic force is felt.
Magnetic Field
Electrolyte
Kilowatt Hour
Lines of Force
15. The number of cycles per second. Example: 60 cycles per second alternating current.
Series Circuit
Frequency
Valance Electron
Atom
16. A circuit with two or more paths for the current to take.
Meter
Primary Cell
Magnetism
Parallel Circuit
17. A unit of power.
Shells
Static Electrical Charge
Watt
Magnetic Lines of Force
18. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Voltmeter
Three -Phase Circuit
Magnetic Lines of Force
Free Electrons
19. A coil of wire designed to act as a magnet as a result of carrying an electrical current. It is usually wound on a soft iron core.
Electrode
Leading Current
Magnetic Material
Electromagnet
20. A device used to change the voltage of an alternating current circuit.
Transformer
Magnetic Material
Wattmeter
Shells
21. Total and complete opposition to the flow of electrons
Conductor
Power
Artificial Magnet
Impedance
22. One- thousandth of a ampere
Milliampere
Condenser
Electron Flow
Leading Current
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
Plates
Electron Flow
24. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Proton
Mega Ohm
Rheostat
25. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Residual Magnetism
Non - Magnetic Material
Permeability
Voltmeter
26. 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.
Magnetic Lines of Force
Alternator
Volt
Storage Battery
27. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Secondary Cell
Ohmmeter
Current
28. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.
Micro Volt
Circuit
Electrical Circuit
Impedance
29. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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30. An alternating current which current cycle begins earlier than its voltage cycle.
Resistor
Leading Current
Free Electrons
Lines of Force
31. One millionth of an ampere.
Ohmmeter
Mega Ohm
Magnetic Lines of Force
Micro Ampere
32. A complete sequence of events - as an alternating- current cycle.
Proton
Lines of Force
Current
Cycle
33. A unit of POWER. 1 kilowatt = 1 -000 watts
Kilowatt
Positive Plate
Proton
Artificial Magnet
34. An instrument for measuring electric current
Armature
Ohm's Law
Electromagnetic Induction
Amp Meter
35. Coil connected to the source of power on a transformer.
Cycle
Electrode
Primary Winding
Voltmeter
36. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Series Circuit
Plates
Primary Winding
Bimetallic Strip
37. Occurs when a stream of electrons are caused to move through a conductor.
Magnetic Circuit
Fuse
Primary Winding
Current
38. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Meter
Proton
Milliampere
39. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Proton
Rheostat
Short Circuit
Mega Ohm
40. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Permeability
Magnetic Field
Secondary Cell
Magnetic Circuit
41. 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.
Lines of Force
Series - Parallel Circuit
Potential Difference
Milliampere
42. 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.
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43. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Bimetallic Strip
Atom
Resistor
Secondary Cell
44. A complete path provided for the flow of electrons. Consists of a source - with a closed conducting path leading from the source and back to the source
Magnetic Lines of Force
Resistor
Electrical Circuit
Circuit
45. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Nucleus
Resistance
Fuse
Magnetic Field
46. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Valance Electron
Electric Generator
Magnetic Material
47. One- thousandth of volt.
Potential Difference
Molecule
Millivolt
Series - Parallel Circuit
48. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Permanent Magnet
Fuse
Millivolt
Secondary Cell
49. A rate of movement of electrons through a conductor.
Artificial Magnet
Current
Lagging Current
Ampere
50. The part of the magnet where the magnetic force is most concentrated. Commonly referred to as the North or South pole or the positive or negative poles)
Parallel Circuit
Conductor
Magnetic Pole
Molecule
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