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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. 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.
Meter
Voltage Drop
Residual Magnetism
Electromagnet
2. The property of a material that opposes the flow of current.
Electric Generator
Electrolyte
Resistance
Natural Magnet
3. The number of cycles per second. Example: 60 cycles per second alternating current.
Rheostat
Kilowatt
Frequency
Electrolyte
4. Smallest part a substance can physically divided into composed of 2 or more atoms.
Static Electrical Charge
Rheostat
Molecule
Series Circuit
5. One- thousandth of a ampere
Transformer
Factors governing the Value of EMF of a Generator
Primary Winding
Milliampere
6. 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)
Storage Battery
Positive Plate
Magnetic Pole
Permeability
7. A unit of POWER. 1 kilowatt = 1 -000 watts
Magnetic Lines of Force
Electric Generator
Three -Phase Circuit
Kilowatt
8. A generator that produces alternating current.
Ohmmeter
Transformer
Natural Magnet
Alternator
9. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Lagging Current
Electromagnet
Bound Electrons
Valance Electron
10. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Nucleus
Lines of Force
Series Circuit
Molecule
11. In a battery - the electrode which takes up the electrons returning from the external circuit.
Magnetic Pole
Ohmmeter
Step- Down Transformer
Positive Plate
12. 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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13. 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.
Micro Ohm
Series Circuit
Secondary Winding
Secondary Cell
14. A resistor designed so that its resistance is readily adjusted.
Molecule
Volt
Bimetallic Strip
Rheostat
15. The dissimilar metals which are placed in an electrolyte to form a cell.
Lagging Current
Shells
Electrode
Micro Ohm
16. Total and complete opposition to the flow of electrons
Volt
Factors governing the Value of EMF of a Generator
Impedance
Electron
17. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Rheostat
Resistance
Coulomb
Ohm
18. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Natural Magnet
Lines of Force
Lagging Current
19. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Artificial Magnet
Electron Flow
Kilowatt Hour
Meter
20. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Shells
Proton
Natural Magnet
21. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Static Electrical Charge
Alternator
Current
Shells
22. Shows relationship between Current - Voltage - Wattage and Resistance.
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23. The area surrounding a magnet in which magnetic properties are exhibited
Magnetic Field
Voltage Drop
Current
Micro Volt
24. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Wattmeter
'Crose Phase'
Amp Meter
Factors governing the Value of EMF of a Generator
25. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Short Circuit
Cycle
Horsepower
Shells
26. A measuring device.
Positive Plate
Meter
Bimetallic Strip
Electron Flow
27. A circuit with two or more paths for the current to take.
Proton
Parallel Circuit
Natural Magnet
Electrolyte
28. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Series Circuit
Valance Electron
Storage Battery
29. A device used to change the voltage of an alternating current circuit.
Voltage Drop
Secondary Winding
Transformer
Primary Cell
30. Single POSITIVE electrical charge - located in the middle of an atom.
Permeability
Proton
Meter
Circuit
31. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Power
Permanent Magnet
Primary Cell
Armature
32. A material with few free electrons. A structure or material used to prevent the passage of current.
Magnetic Lines of Force
Impedance
Millivolt
Insulator
33. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Magnetic Pole
Ohm
Volt
Ohm's Law
34. A complete sequence of events - as an alternating- current cycle.
Primary Winding
Ohm's Law
Cycle
Ohm's Law
35. 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.
Fuse
Transformer
Bimetallic Strip
Kilowatt Hour
36. 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.
Valance Electron
Step- Down Transformer
Kilowatt
Electro- Motive Force
37. A rate of movement of electrons through a conductor.
Artificial Magnet
Bound Electrons
Lagging Current
Current
38. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Kilowatt Hour
Plates
Magnetic Material
Wattmeter
39. 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.
Electrode
Circuit
Impedance
Resistor
40. Meter used to measure resistance in an electrical circuit.
Volt
Free Electrons
Ohmmeter
Armature
41. Negative charge of electricity
Potential Difference
Free Electrons
Nucleus
Electron
42. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
'Crose Phase'
Proton
Condenser
Secondary Cell
43. A circuit in which there is resistance (load) connected both in series and parallel.
Non - Magnetic Material
Amp Meter
Mega Ohm
Series - Parallel Circuit
44. One million ohms.
Horsepower
Mega Ohm
Magnetic Field
Positive Plate
45. 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
Electrical Circuit
Micro Ampere
Series Circuit
Resistance
46. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Step-Up Transformer
Cycle
Bimetallic Strip
Permanent Magnet
47. Several secondary cells connected together for either a greater voltage or current output.
Storage Battery
Current
Nucleus
Ohm's Law
48. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Magnetic Field
Lagging Current
Three -Phase Circuit
Series - Parallel Circuit
49. One- thousandth of volt.
Frequency
Millivolt
Volt
Kilowatt Hour
50. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Primary Winding
Step-Up Transformer
Resistor
Armature