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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. Meter used to measure resistance in an electrical circuit.
Permeability
Ampere
Armature
Ohmmeter
2. Lines representing the direction of the magnetic force in a magnetic field.
Power
Circuit
Ohm
Magnetic Lines of Force
3. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Non - Magnetic Material
Atom
Circuit
Wattmeter
4. Coil connected to the source of power on a transformer.
Primary Winding
Free Electrons
Magnetic Field
Magnetic Pole
5. The liquid solution (sometime a paste) in which the electrodes are placed.
Factors Governing Resistance
Electron
Magnetic Field
Electrolyte
6. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Wattmeter
Static Electrical Charge
Electric Generator
7. A measuring device.
Primary Winding
Resistance
Meter
Magnetic Circuit
8. One- thousandth of a ampere
Milliampere
Ohmmeter
Millivolt
Watt
9. One- thousandth of volt.
Coulomb
Electromagnetic Induction
Millivolt
Permeability
10. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
11. One millionth of a volt.
Voltmeter
Watt
Electromagnet
Micro Volt
12. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Magnetic Poles
Fuse
Mega Ohm
Residual Magnetism
13. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Residual Magnetism
Circuit
Ohm's Law
Fuse
14. Opposition to current flow
Resistance
Magnetism
Ohm's Law
Electron Flow
15. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Voltmeter
Atom
Proton
Meter
16. One millionth of an ampere.
Fuse
Micro Ampere
Kilowatt
Secondary Cell
17. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Factors Governing Resistance
Magnetic Circuit
Armature
Alternating Current
18. Several secondary cells connected together for either a greater voltage or current output.
Ohm's Law
Electron
Magnetic Field
Storage Battery
19. Single POSITIVE electrical charge - located in the middle of an atom.
Milliampere
Proton
Ohmmeter
Series Circuit
20. A material that has many free electrons thus allowing electric current to flow through it easily.
Magnetic Pole
Voltage Drop
Ohmmeter
Conductor
21. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Free Electrons
Kilowatt
Shells
Potential Difference
22. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Plates
Electro- Motive Force
Rotor
Natural Magnet
23. Occurs when a stream of electrons are caused to move through a conductor.
Current
Atom
Factors Governing Resistance
Secondary Cell
24. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Armature
Natural Magnet
Lagging Current
Voltage Drop
25. A material which can be magnetized - principally iron.
Factors Governing Resistance
Valance Electron
Primary Winding
Magnetic Material
26. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Voltmeter
Electron
Parallel Circuit
Potential Difference
27. A complete sequence of events - as an alternating- current cycle.
Bimetallic Strip
Electrolyte
Residual Magnetism
Cycle
28. A circuit with only one path for current to flow. There are no branches.
Series Circuit
Magnetic Circuit
Primary Cell
Micro Ohm
29. 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.
30. A circuit in which there is resistance (load) connected both in series and parallel.
Step- Down Transformer
'Crose Phase'
Natural Magnet
Series - Parallel Circuit
31. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Free Electrons
Ohm
Kilowatt
Secondary Winding
32. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Storage Battery
Secondary Cell
Ohm's Law
Electromagnet
33. A circuit with two or more paths for the current to take.
Impedance
Rotor
Leading Current
Parallel Circuit
34. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Resistor
Magnetism
Condenser
Electric Generator
35. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Magnetic Material
Resistor
Step- Down Transformer
36. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Magnetic Field
Cycle
Electro- Motive Force
37. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Leading Current
Plates
Electric Generator
Lines of Force
38. Smallest part a substance can physically divided into composed of 2 or more atoms.
Molecule
Series Circuit
Ohmmeter
Ohm
39. 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
Parallel Circuit
Horsepower
Resistance
40. A resistor designed so that its resistance is readily adjusted.
Magnetic Field
Electro- Motive Force
Secondary Winding
Rheostat
41. 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.
Molecule
Frequency
Series Circuit
Magnetic Pole
42. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Magnetism
Volt
Bound Electrons
Electron
43. The property of a material that opposes the flow of current.
Resistor
Frequency
Magnetic Material
Resistance
44. 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.
Lines of Force
Voltage Drop
Electromagnetic Induction
Impedance
45. 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.
Series Circuit
Rheostat
Current
Valance Electron
46. Total and complete opposition to the flow of electrons
Volt
Magnetic Lines of Force
Kilowatt Hour
Impedance
47. 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.
Voltage Drop
Primary Winding
Parallel Circuit
Circuit
48. In a battery - the electrode which takes up the electrons returning from the external circuit.
Resistance
Factors governing the Value of EMF of a Generator
Micro Ampere
Positive Plate
49. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Parallel Circuit
Voltage Drop
Factors Governing Resistance
Frequency
50. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Magnetic Poles
Volt
Positive Plate
Short Circuit