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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. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Step-Up Transformer
Resistance
Ohm's Law
Atom
2. Shows relationship between Current - Voltage - Wattage and Resistance.
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3. A complete sequence of events - as an alternating- current cycle.
Cycle
Electron
Short Circuit
Magnetic Lines of Force
4. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Meter
Shells
Ampere
Impedance
5. Negative charge of electricity
Secondary Cell
Impedance
Volt
Electron
6. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Amp Meter
Magnetic Circuit
Series Circuit
Ohm
7. 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.
Magnetic Pole
Frequency
Volt
Potential Difference
8. One millionth of a volt.
Residual Magnetism
Bound Electrons
Micro Volt
Frequency
9. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Primary Winding
Electron
Ohm
10. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Bound Electrons
Lagging Current
Electromagnet
11. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Proton
Watt
Magnetic Material
12. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Magnetism
Residual Magnetism
Magnetic Field
Natural Magnet
13. A circuit with two or more paths for the current to take.
Electromagnetic Induction
Storage Battery
Electrolyte
Parallel Circuit
14. The center portion of an atom which has a positive electrical charge.
Lagging Current
Millivolt
Electrolyte
Nucleus
15. Meter used to measure resistance in an electrical circuit.
Parallel Circuit
Resistor
Ohmmeter
Secondary Winding
16. The rotating member of an electrical machine.
Impedance
Mega Ohm
Rotor
Electromagnet
17. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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18. One- thousandth of a ampere
Milliampere
Horsepower
Ohmmeter
Wattmeter
19. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Impedance
Magnetic Pole
Factors Governing Resistance
Armature
20. A circuit with only one path for current to flow. There are no branches.
Atom
Current
Positive Plate
Series Circuit
21. Opposition to current flow
Proton
Plates
Resistance
Ohm's Law
22. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Magnetic Material
Bimetallic Strip
Primary Winding
Electron
23. Smallest part a substance can physically divided into composed of 2 or more atoms.
Conductor
Nucleus
Molecule
Milliampere
24. Several secondary cells connected together for either a greater voltage or current output.
Factors Governing Resistance
Residual Magnetism
Coulomb
Storage Battery
25. 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.
Micro Ohm
Molecule
Ohm's Law
Volt
26. Total and complete opposition to the flow of electrons
Millivolt
Impedance
Power
Permanent Magnet
27. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Transformer
Proton
Magnetic Poles
Horsepower
28. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Factors governing the Value of EMF of a Generator
Bound Electrons
Valance Electron
Static Electrical Charge
29. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Static Electrical Charge
Plates
Transformer
Rotor
30. A measuring device.
Electron Flow
Proton
Free Electrons
Meter
31. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Ohm's Law
Factors governing the Value of EMF of a Generator
Secondary Winding
32. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Current
Electrode
Conductor
33. A circuit in which there is resistance (load) connected both in series and parallel.
Alternator
Parallel Circuit
Series - Parallel Circuit
Short Circuit
34. A resistor designed so that its resistance is readily adjusted.
Secondary Winding
Resistance
Rheostat
Permeability
35. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Secondary Cell
Parallel Circuit
Permanent Magnet
Atom
36. One million ohms.
Mega Ohm
Electro- Motive Force
Kilowatt Hour
Current
37. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Magnetic Poles
Coulomb
Permeability
Shells
38. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Kilowatt Hour
Voltmeter
Electro- Motive Force
39. A unit of POWER. 1 kilowatt = 1 -000 watts
Series - Parallel Circuit
Bimetallic Strip
Kilowatt
Factors governing the Value of EMF of a Generator
40. 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.
Meter
Circuit
Coulomb
Bimetallic Strip
41. One millionth of an ohm.
Micro Ohm
Bound Electrons
Transformer
Lagging Current
42. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Kilowatt Hour
Secondary Cell
Step-Up Transformer
Plates
43. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Bimetallic Strip
Parallel Circuit
Electron
Resistor
44. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Volt
Watt
Proton
45. The space around a magnet in which the magnetic force is felt.
Permanent Magnet
Magnetic Field
Proton
Magnetic Material
46. A material that has many free electrons thus allowing electric current to flow through it easily.
Permanent Magnet
Impedance
Conductor
Step-Up Transformer
47. 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.
Amp Meter
Electromagnetic Induction
Molecule
Voltage Drop
48. A rate of movement of electrons through a conductor.
'Crose Phase'
Wattmeter
Electrical Circuit
Current
49. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Potential Difference
Ohm's Law
Secondary Cell
Electro- Motive Force
50. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Molecule
Atom
Voltage Drop
Magnetism