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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 unit of power.
Three -Phase Circuit
Rotor
Electromagnetic Induction
Watt
2. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Potential Difference
Electromagnet
Ampere
Magnetism
3. 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
Electron Flow
Current
Potential Difference
4. 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.
Leading Current
Electromagnet
Series Circuit
Step- Down Transformer
5. One millionth of an ampere.
Ohm
Magnetic Material
Electric Generator
Micro Ampere
6. The space around a magnet in which the magnetic force is felt.
Fuse
Magnetic Field
Series - Parallel Circuit
Magnetic Pole
7. A circuit with two or more paths for the current to take.
Parallel Circuit
Permeability
Atom
Short Circuit
8. The liquid solution (sometime a paste) in which the electrodes are placed.
Permanent Magnet
Valance Electron
Volt
Electrolyte
9. 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)
Series - Parallel Circuit
Magnetic Field
Micro Volt
Magnetic Pole
10. In a battery - the electrode which takes up the electrons returning from the external circuit.
Shells
Positive Plate
Parallel Circuit
Magnetic Poles
11. Several secondary cells connected together for either a greater voltage or current output.
Electro- Motive Force
Ohm
Storage Battery
Circuit
12. Meter used to measure resistance in an electrical circuit.
Static Electrical Charge
Wattmeter
Ohmmeter
Ohm's Law
13. The rotating member of an electrical machine.
Rotor
Magnetic Field
Micro Ohm
Magnetism
14. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Micro Ohm
Natural Magnet
Valance Electron
Armature
15. Total and complete opposition to the flow of electrons
Electrode
Kilowatt
Factors governing the Value of EMF of a Generator
Impedance
16. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Magnetic Lines of Force
Short Circuit
Electromagnetic Induction
Static Electrical Charge
17. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Leading Current
Condenser
Ohm
Atom
18. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Mega Ohm
Resistance
Positive Plate
Secondary Cell
19. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Kilowatt Hour
Non - Magnetic Material
Current
Lagging Current
20. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Proton
Ohm
Factors Governing Resistance
Condenser
21. 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.
Potential Difference
Milliampere
Factors Governing Resistance
Horsepower
22. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Electromagnetic Induction
Bound Electrons
Lines of Force
Atom
23. A material that has many free electrons thus allowing electric current to flow through it easily.
Resistor
Free Electrons
Wattmeter
Conductor
24. A circuit with more than one path. Current branches to flow in every available path.
Step-Up Transformer
Parallel Circuit
Secondary Winding
Circuit
25. Occurs when a stream of electrons are caused to move through a conductor.
Current
Rheostat
Transformer
Cycle
26. The property of a material that opposes the flow of current.
Fuse
Electromagnetic Induction
Power
Resistance
27. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Magnetism
Alternator
Volt
Primary Cell
28. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Bimetallic Strip
Non - Magnetic Material
Kilowatt
29. 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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30. Single POSITIVE electrical charge - located in the middle of an atom.
Magnetic Material
Voltage Drop
Proton
Millivolt
31. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Secondary Winding
Meter
Power
Static Electrical Charge
32. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Artificial Magnet
Watt
Step- Down Transformer
Primary Cell
33. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Voltage Drop
Electro- Motive Force
Transformer
Alternator
34. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Voltage Drop
Permanent Magnet
Current
Valance Electron
35. A device used to change the voltage of an alternating current circuit.
Ohmmeter
Transformer
Permeability
Armature
36. An alternating current which current cycle begins later that its voltage cycle.
Power
Current
Lines of Force
Lagging Current
37. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Current
Kilowatt Hour
Three -Phase Circuit
Electro- Motive Force
38. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Ohm's Law
Bimetallic Strip
Volt
Voltage Drop
39. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Secondary Cell
Three -Phase Circuit
Lines of Force
Circuit
40. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Series Circuit
Artificial Magnet
Electric Generator
Atom
41. 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.
Non - Magnetic Material
Voltage Drop
Valance Electron
Proton
42. The dissimilar metals which are placed in an electrolyte to form a cell.
Micro Ampere
Horsepower
Electrode
'Crose Phase'
43. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Bimetallic Strip
Ohmmeter
Magnetic Material
Free Electrons
44. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
'Crose Phase'
Magnetism
Micro Ampere
Parallel Circuit
45. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Series Circuit
Horsepower
Circuit
Factors governing the Value of EMF of a Generator
46. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electromagnet
Secondary Cell
Electron Flow
Wattmeter
47. 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
Millivolt
Ohm
Electrical Circuit
Rheostat
48. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Artificial Magnet
Natural Magnet
Resistor
Lines of Force
49. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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50. Smallest part a substance can physically divided into composed of 2 or more atoms.
Atom
'Crose Phase'
Electromagnetic Induction
Molecule
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