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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 material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Kilowatt
Electric Generator
Atom
Non - Magnetic Material
2. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Non - Magnetic Material
Ohm's Law
Resistance
Fuse
3. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Storage Battery
Permanent Magnet
Kilowatt Hour
4. Positive charge of electricity. Located in the nucleus of the atom.
Armature
Proton
Magnetic Circuit
Series - Parallel Circuit
5. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Primary Cell
Proton
Primary Winding
Free Electrons
6. An alternating current which current cycle begins earlier than its voltage cycle.
Proton
Lagging Current
Leading Current
Current
7. 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.
Valance Electron
Wattmeter
Series Circuit
Rheostat
8. Occurs when a stream of electrons are caused to move through a conductor.
Current
Bound Electrons
Electrical Circuit
Condenser
9. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Milliampere
Permanent Magnet
Mega Ohm
Meter
10. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Amp Meter
Watt
Factors governing the Value of EMF of a Generator
11. One millionth of a volt.
Lagging Current
Electromagnet
Secondary Winding
Micro Volt
12. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Frequency
Parallel Circuit
Series - Parallel Circuit
13. A device used to change the voltage of an alternating current circuit.
Parallel Circuit
Positive Plate
Ohmmeter
Transformer
14. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Magnetic Circuit
Static Electrical Charge
Fuse
Wattmeter
15. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Electric Generator
Circuit
Primary Cell
Series - Parallel Circuit
16. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Proton
Secondary Cell
Micro Ohm
17. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Frequency
Conductor
Circuit
Atom
18. An instrument for measuring electric current
Amp Meter
Electrode
Rotor
Kilowatt
19. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Leading Current
Rheostat
Step-Up Transformer
Primary Winding
20. 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.
Series Circuit
Coulomb
Non - Magnetic Material
Wattmeter
21. The center portion of an atom which has a positive electrical charge.
Nucleus
Magnetic Field
Frequency
Valance Electron
22. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Natural Magnet
Rotor
Meter
Alternating Current
23. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Resistance
Electromagnetic Induction
Armature
Short Circuit
24. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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25. 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
Milliampere
Electromagnet
Electrical Circuit
Storage Battery
26. Smallest part a substance can physically divided into composed of 2 or more atoms.
Secondary Cell
Magnetic Poles
Coulomb
Molecule
27. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Permanent Magnet
Fuse
Factors Governing Resistance
Secondary Cell
28. Lines representing the direction of the magnetic force in a magnetic field.
Conductor
Magnetic Circuit
Electrolyte
Magnetic Lines of Force
29. A rate of movement of electrons through a conductor.
Armature
Current
Leading Current
Electron
30. A measuring device.
Amp Meter
Electron
Electric Generator
Meter
31. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electron Flow
Ohm
Power
Volt
32. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Conductor
Horsepower
Magnetism
Voltage Drop
33. A unit of POWER. 1 kilowatt = 1 -000 watts
Alternator
Electrolyte
Static Electrical Charge
Kilowatt
34. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Free Electrons
Mega Ohm
Electrical Circuit
Shells
35. In a battery - the electrode which takes up the electrons returning from the external circuit.
Positive Plate
Volt
Primary Winding
Armature
36. The liquid solution (sometime a paste) in which the electrodes are placed.
Permeability
Electrolyte
Lagging Current
Valance Electron
37. 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.
Mega Ohm
Voltage Drop
Potential Difference
Residual Magnetism
38. 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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39. 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.
Electrode
Bimetallic Strip
Voltmeter
Millivolt
40. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Electrical Circuit
Armature
Milliampere
Mega Ohm
41. 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.
Volt
Frequency
Voltage Drop
Molecule
42. A resistor designed so that its resistance is readily adjusted.
Shells
Positive Plate
Electrical Circuit
Rheostat
43. Meter used to measure resistance in an electrical circuit.
Proton
Ohmmeter
Meter
Shells
44. One- thousandth of volt.
Millivolt
Resistance
Magnetic Field
Voltage Drop
45. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Static Electrical Charge
Series Circuit
Primary Winding
Proton
46. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Milliampere
Atom
Non - Magnetic Material
Resistor
47. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Step- Down Transformer
Permanent Magnet
Armature
Electro- Motive Force
48. Single POSITIVE electrical charge - located in the middle of an atom.
Residual Magnetism
Electro- Motive Force
Proton
Circuit
49. The space around a magnet in which the magnetic force is felt.
Voltage Drop
Magnetic Field
Magnetism
Bimetallic Strip
50. A generator that produces alternating current.
Impedance
Alternating Current
Alternator
Resistor
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