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Test your basic knowledge |
Basic Electricity Vocab
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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. The unit of Electro- Motive Force
Magnetic Field
Volt
Magnetic Material
Parallel Circuit
2. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Secondary Winding
Amp Meter
Millivolt
3. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Leading Current
Series - Parallel Circuit
Magnetism
Secondary Cell
4. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Nucleus
Wattmeter
Amp Meter
Meter
5. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Bound Electrons
Lagging Current
Residual Magnetism
Resistor
6. The liquid solution (sometime a paste) in which the electrodes are placed.
Voltage Drop
Magnetic Field
Electrolyte
Electro- Motive Force
7. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Horsepower
Factors governing the Value of EMF of a Generator
Magnetic Poles
Magnetic Material
8. 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.
Voltmeter
Residual Magnetism
Three -Phase Circuit
Voltage Drop
9. One- thousandth of a ampere
Amp Meter
Kilowatt
Armature
Milliampere
10. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Micro Volt
Armature
Electromagnetic Induction
11. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Resistance
Armature
Factors Governing Resistance
Current
12. An instrument for measuring electric current
Amp Meter
Series Circuit
Rotor
Factors governing the Value of EMF of a Generator
13. The center portion of an atom which has a positive electrical charge.
Meter
Resistor
Nucleus
Ampere
14. One millionth of a volt.
Natural Magnet
Proton
Micro Volt
Rheostat
15. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Static Electrical Charge
Alternating Current
Non - Magnetic Material
Magnetic Poles
16. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Atom
Static Electrical Charge
Volt
Magnetic Pole
17. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Potential Difference
Shells
Step- Down Transformer
Step-Up Transformer
18. One- thousandth of volt.
Artificial Magnet
Positive Plate
Leading Current
Millivolt
19. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Series Circuit
Permeability
Proton
Ohm's Law
20. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Ohm
Short Circuit
Frequency
Electromagnetic Induction
21. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Parallel Circuit
Electro- Motive Force
Non - Magnetic Material
22. 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
Three -Phase Circuit
Series Circuit
Electrical Circuit
Atom
23. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Micro Ampere
Plates
Armature
24. 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.
Condenser
Circuit
Electrolyte
Artificial Magnet
25. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Condenser
Resistance
Armature
Plates
26. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Frequency
Three -Phase Circuit
Positive Plate
Step-Up Transformer
27. The number of cycles per second. Example: 60 cycles per second alternating current.
Current
Free Electrons
Frequency
Micro Volt
28. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Milliampere
Magnetic Circuit
Potential Difference
Alternator
29. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Secondary Winding
Residual Magnetism
Bound Electrons
Primary Cell
30. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Voltmeter
Valance Electron
Bound Electrons
Electron Flow
31. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Residual Magnetism
Short Circuit
Magnetic Pole
Watt
32. Smallest part a substance can physically divided into composed of 2 or more atoms.
Magnetism
Molecule
Lagging Current
Static Electrical Charge
33. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Magnetic Lines of Force
Voltage Drop
Bound Electrons
Natural Magnet
34. (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
Electromagnet
Millivolt
Leading Current
35. Shows relationship between Current - Voltage - Wattage and Resistance.
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36. A material that has many free electrons thus allowing electric current to flow through it easily.
Volt
Conductor
Condenser
Impedance
37. A rate of movement of electrons through a conductor.
Electron
Series - Parallel Circuit
Electrolyte
Current
38. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Volt
Impedance
Secondary Winding
Free Electrons
39. 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
Magnetism
Magnetic Material
Conductor
40. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Ohmmeter
Electromagnetic Induction
Permanent Magnet
Lines of Force
41. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Resistance
Mega Ohm
Natural Magnet
Fuse
42. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Proton
Primary Cell
Lagging Current
Ampere
43. 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.
Free Electrons
Molecule
Horsepower
Series Circuit
44. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Resistance
Electron Flow
Millivolt
Atom
45. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Potential Difference
Secondary Winding
Leading Current
Condenser
46. The time rate at which work is done or energy is transferred. When a pressure of 1 volt sends a current of 1 ampere through a resistance of 1 ohm - the power in the circuit is said to be 1 watt.
Resistor
Step- Down Transformer
Power
Ohm's Law
47. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Electromagnetic Induction
Kilowatt Hour
Rheostat
Bimetallic Strip
48. The space around a magnet in which the magnetic force is felt.
Micro Volt
Frequency
Magnetic Field
Proton
49. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Power
Plates
Voltmeter
Rotor
50. A measuring device.
Current
Permeability
Meter
'Crose Phase'