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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. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Coulomb
Three -Phase Circuit
Fuse
Horsepower
2. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Power
Alternating Current
Secondary Cell
3. The property of a material that opposes the flow of current.
'Crose Phase'
Electric Generator
Resistance
Magnetic Pole
4. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Permanent Magnet
Watt
Volt
5. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Proton
Millivolt
Magnetic Pole
Atom
6. 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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7. Negative charge of electricity
Watt
Impedance
Step- Down Transformer
Electron
8. 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
Storage Battery
Positive Plate
Rheostat
9. A rate of movement of electrons through a conductor.
Electromagnetic Induction
Condenser
Micro Ampere
Current
10. Occurs when a stream of electrons are caused to move through a conductor.
Power
Magnetism
Electrical Circuit
Current
11. 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.
Ohm's Law
Bimetallic Strip
Electromagnet
Artificial Magnet
12. A circuit with only one path for current to flow. There are no branches.
Impedance
Wattmeter
Voltmeter
Series Circuit
13. One millionth of an ohm.
Magnetic Pole
Non - Magnetic Material
Micro Ohm
Potential Difference
14. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Proton
Leading Current
Voltmeter
15. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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16. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Three -Phase Circuit
Static Electrical Charge
Magnetic Material
17. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Wattmeter
Permeability
Bound Electrons
Nucleus
18. A resistor designed so that its resistance is readily adjusted.
Impedance
Free Electrons
Natural Magnet
Rheostat
19. 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.
Electro- Motive Force
Permeability
Voltage Drop
Magnetic Field
20. In a battery - the electrode which takes up the electrons returning from the external circuit.
Wattmeter
Magnetic Pole
Positive Plate
Volt
21. A material with few free electrons. A structure or material used to prevent the passage of current.
Rotor
Magnetic Field
Insulator
Electron
22. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrolyte
Electrical Circuit
'Crose Phase'
Series - Parallel Circuit
23. 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.
Ohm's Law
Valance Electron
Step- Down Transformer
Magnetic Poles
24. The unit of Electro- Motive Force
Volt
Three -Phase Circuit
Rheostat
Micro Ohm
25. Total and complete opposition to the flow of electrons
Watt
Impedance
Bound Electrons
Series Circuit
26. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Kilowatt Hour
Electron
Positive Plate
Transformer
27. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Ampere
Power
Electromagnetic Induction
Static Electrical Charge
28. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Ohm's Law
Condenser
Rheostat
Proton
29. 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.
Power
Factors Governing Resistance
Circuit
Cycle
30. Iron and certain alloys of iron which are magnetized by artificial means.
Electrical Circuit
Ohm's Law
Electrode
Artificial Magnet
31. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Kilowatt Hour
Magnetic Field
Electro- Motive Force
Bimetallic Strip
32. Coil connected to the source of power on a transformer.
Primary Winding
Magnetic Pole
Resistance
Primary Cell
33. Shows relationship between Current - Voltage - Wattage and Resistance.
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34. 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.
Volt
Resistance
Primary Winding
Circuit
35. One millionth of an ampere.
Series Circuit
Power
Nucleus
Micro Ampere
36. 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.
Watt
Volt
Frequency
Magnetic Material
37. An instrument for measuring electric current
Amp Meter
Kilowatt
Potential Difference
Parallel Circuit
38. 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.
Non - Magnetic Material
Conductor
Potential Difference
Step-Up Transformer
39. A complete sequence of events - as an alternating- current cycle.
Cycle
Ohm
Positive Plate
Secondary Winding
40. The space around a magnet in which the magnetic force is felt.
Alternating Current
Alternator
Permeability
Magnetic Field
41. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Current
Nucleus
Series Circuit
42. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Impedance
Wattmeter
Storage Battery
Free Electrons
43. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Micro Ampere
Transformer
Primary Cell
44. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Residual Magnetism
Electron Flow
Watt
Parallel Circuit
45. A material that has many free electrons thus allowing electric current to flow through it easily.
Electrolyte
Parallel Circuit
Conductor
Electron Flow
46. A circuit with more than one path. Current branches to flow in every available path.
Horsepower
Parallel Circuit
Bimetallic Strip
Magnetism
47. A circuit in which there is resistance (load) connected both in series and parallel.
Valance Electron
Condenser
Series - Parallel Circuit
Non - Magnetic Material
48. A generator that produces alternating current.
Secondary Cell
Alternator
Milliampere
Electron
49. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Circuit
Valance Electron
Proton
Armature
50. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Artificial Magnet
Positive Plate
Secondary Cell
Magnetic Circuit