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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 area surrounding a magnet in which magnetic properties are exhibited
Leading Current
Current
Electron
Magnetic Field
2. Occurs when a stream of electrons are caused to move through a conductor.
Series Circuit
Magnetic Field
Micro Volt
Current
3. 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.
'Crose Phase'
Potential Difference
Ohm
Coulomb
4. Positive charge of electricity. Located in the nucleus of the atom.
Lines of Force
Resistor
Primary Winding
Proton
5. An instrument for measuring electric current
Amp Meter
Lines of Force
Conductor
Primary Cell
6. 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.
Ohm's Law
Resistance
Lines of Force
Volt
7. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Electron
Transformer
Ampere
Residual Magnetism
8. One millionth of a volt.
Magnetic Pole
Micro Volt
Magnetic Lines of Force
Ohmmeter
9. Shows relationship between Current - Voltage - Wattage and Resistance.
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10. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Step-Up Transformer
Coulomb
Proton
Valance Electron
11. The number of cycles per second. Example: 60 cycles per second alternating current.
Electrical Circuit
Condenser
Frequency
Short Circuit
12. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Series Circuit
Fuse
Resistance
Step- Down Transformer
13. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Proton
Electro- Motive Force
Electromagnetic Induction
Electron
14. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Factors Governing Resistance
Volt
Electromagnet
Electric Generator
15. Single POSITIVE electrical charge - located in the middle of an atom.
Alternating Current
Kilowatt Hour
Volt
Proton
16. 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.
Volt
Voltage Drop
Short Circuit
Electron
17. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Free Electrons
Factors Governing Resistance
Amp Meter
Voltage Drop
18. 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.
Factors governing the Value of EMF of a Generator
Series Circuit
Mega Ohm
Watt
19. One- thousandth of a ampere
Electrode
Non - Magnetic Material
Impedance
Milliampere
20. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Magnetic Material
Power
Non - Magnetic Material
Magnetic Circuit
21. 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.
Micro Volt
Free Electrons
Rotor
Power
22. A complete sequence of events - as an alternating- current cycle.
Cycle
Non - Magnetic Material
Electrical Circuit
Micro Volt
23. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Electric Generator
Proton
Magnetic Circuit
Alternating Current
24. 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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25. A circuit with more than one path. Current branches to flow in every available path.
Magnetic Lines of Force
Parallel Circuit
Positive Plate
Lagging Current
26. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Wattmeter
Factors Governing Resistance
Atom
27. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Electrolyte
Micro Ohm
Static Electrical Charge
Watt
28. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Resistance
Voltage Drop
Electrode
Electro- Motive Force
29. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Milliampere
Voltage Drop
Molecule
30. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Fuse
Three -Phase Circuit
Electron
Armature
31. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Condenser
Lagging Current
Electrical Circuit
Shells
32. A material with few free electrons. A structure or material used to prevent the passage of current.
Proton
Insulator
Bound Electrons
Voltage Drop
33. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Power
Resistor
Step-Up Transformer
Shells
34. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Magnetic Material
Ohm's Law
Step-Up Transformer
Secondary Winding
35. A material that has many free electrons thus allowing electric current to flow through it easily.
Plates
Potential Difference
Conductor
Primary Winding
36. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electron
Electromagnet
Voltage Drop
Magnetic Field
37. A generator that produces alternating current.
Coulomb
Alternator
Series - Parallel Circuit
Voltage Drop
38. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Positive Plate
Insulator
Horsepower
Secondary Cell
39. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Parallel Circuit
Potential Difference
Electron Flow
Magnetic Lines of Force
40. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Magnetic Pole
Primary Cell
Proton
Magnetism
41. 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.
Rheostat
Non - Magnetic Material
Bimetallic Strip
Short Circuit
42. An alternating current which current cycle begins earlier than its voltage cycle.
Factors Governing Resistance
Magnetic Field
Leading Current
Plates
43. A measuring device.
Step-Up Transformer
Electron
Condenser
Meter
44. One million ohms.
Electrolyte
Voltage Drop
Mega Ohm
Series Circuit
45. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Plates
Current
Primary Winding
Wattmeter
46. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Coulomb
Current
Magnetic Material
47. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Ohm's Law
'Crose Phase'
Positive Plate
Wattmeter
48. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Magnetism
Milliampere
Natural Magnet
49. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Nucleus
Horsepower
Micro Ampere
50. Iron and certain alloys of iron which are magnetized by artificial means.
Millivolt
Ohm
Artificial Magnet
Amp Meter