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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 property of a material that opposes the flow of current.
'Crose Phase'
Resistance
Valance Electron
Primary Cell
2. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Watt
Electron Flow
Shells
Kilowatt
3. 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.
Lagging Current
Voltage Drop
Series - Parallel Circuit
Factors governing the Value of EMF of a Generator
4. The area surrounding a magnet in which magnetic properties are exhibited
Resistor
Magnetic Field
Mega Ohm
Micro Ampere
5. A circuit with only one path for current to flow. There are no branches.
Volt
Series Circuit
Electrode
Wattmeter
6. Opposition to current flow
Magnetic Lines of Force
Resistance
Ohmmeter
Shells
7. The dissimilar metals which are placed in an electrolyte to form a cell.
Electrode
Cycle
Voltmeter
Electrolyte
8. 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.
Parallel Circuit
Meter
Valance Electron
Free Electrons
9. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Condenser
Kilowatt Hour
Three -Phase Circuit
Series Circuit
10. One millionth of a volt.
Bimetallic Strip
Lines of Force
Resistance
Micro Volt
11. 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.
Magnetism
Static Electrical Charge
Magnetic Poles
Power
12. 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.
Parallel Circuit
Primary Cell
Volt
Positive Plate
13. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Armature
Electron
Magnetism
14. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Parallel Circuit
Free Electrons
Resistor
Factors Governing Resistance
15. A material with few free electrons. A structure or material used to prevent the passage of current.
Leading Current
Insulator
Primary Cell
Molecule
16. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Magnetic Field
Parallel Circuit
Meter
17. 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
Meter
Resistance
Lagging Current
18. Single POSITIVE electrical charge - located in the middle of an atom.
'Crose Phase'
Leading Current
Electrolyte
Proton
19. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Primary Cell
Storage Battery
Permeability
Series Circuit
20. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Secondary Winding
Magnetic Poles
Series Circuit
Insulator
21. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Three -Phase Circuit
Lines of Force
Bound Electrons
Magnetic Pole
22. Negative charge of electricity
Mega Ohm
Voltage Drop
Electron
Micro Ohm
23. A material which can be magnetized - principally iron.
Resistor
Alternating Current
Proton
Magnetic Material
24. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Conductor
Rotor
Three -Phase Circuit
Bound Electrons
25. A generator that produces alternating current.
Alternator
Magnetic Poles
Leading Current
Step- Down Transformer
26. 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.
Three -Phase Circuit
Bimetallic Strip
Circuit
Natural Magnet
27. A measuring device.
Ohmmeter
Meter
Three -Phase Circuit
Proton
28. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Three -Phase Circuit
Magnetic Lines of Force
Free Electrons
Atom
29. A resistor designed so that its resistance is readily adjusted.
Rheostat
Bimetallic Strip
Nucleus
Resistance
30. One millionth of an ampere.
Micro Ampere
Resistor
Resistance
Insulator
31. 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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32. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Rotor
Meter
Wattmeter
Secondary Cell
33. The rotating member of an electrical machine.
Voltage Drop
Series Circuit
Rotor
'Crose Phase'
34. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Ohm's Law
Amp Meter
Molecule
Voltage Drop
35. A circuit with more than one path. Current branches to flow in every available path.
Leading Current
Secondary Cell
Parallel Circuit
Permeability
36. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Magnetic Lines of Force
Electrode
Ohm's Law
Step-Up Transformer
37. 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
Frequency
Series Circuit
Ohmmeter
38. 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.
Electromagnet
Secondary Cell
Voltmeter
Armature
39. A unit of POWER. 1 kilowatt = 1 -000 watts
Wattmeter
Electro- Motive Force
'Crose Phase'
Kilowatt
40. Positive charge of electricity. Located in the nucleus of the atom.
Circuit
Resistor
Proton
Magnetic Pole
41. One million ohms.
Mega Ohm
Electromagnet
Magnetic Lines of Force
Horsepower
42. One- thousandth of volt.
Positive Plate
Ohm
Lagging Current
Millivolt
43. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Natural Magnet
Potential Difference
Volt
44. Coil connected to the source of power on a transformer.
Micro Ohm
Armature
Bound Electrons
Primary Winding
45. A circuit with two or more paths for the current to take.
Electric Generator
Ohm's Law
Micro Volt
Parallel Circuit
46. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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47. Total and complete opposition to the flow of electrons
Leading Current
Millivolt
Step-Up Transformer
Impedance
48. A rate of movement of electrons through a conductor.
Current
Volt
Electrical Circuit
Step- Down Transformer
49. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Leading Current
Primary Winding
Armature
Bound Electrons
50. 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 Lines of Force
Potential Difference
Current
Non - Magnetic Material