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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. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Impedance
Storage Battery
Voltmeter
2. 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
Ohm's Law
Electrical Circuit
Parallel Circuit
Millivolt
3. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Free Electrons
Atom
Circuit
Ampere
4. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Magnetic Circuit
Proton
Permeability
Wattmeter
5. In a battery - the electrode which takes up the electrons returning from the external circuit.
Mega Ohm
Positive Plate
Nucleus
Resistance
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)
Electrode
Molecule
Fuse
Magnetic Pole
7. 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.
Circuit
Natural Magnet
Proton
Three -Phase Circuit
8. Positive charge of electricity. Located in the nucleus of the atom.
Bimetallic Strip
Millivolt
Proton
Short Circuit
9. 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.
Residual Magnetism
Electrical Circuit
Circuit
Volt
10. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Ohm
Valance Electron
Coulomb
Magnetic Circuit
11. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Magnetic Circuit
Magnetism
Coulomb
Wattmeter
12. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Voltmeter
Parallel Circuit
Secondary Winding
Frequency
13. 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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14. One millionth of a volt.
Electron
Resistance
Micro Volt
Ohmmeter
15. One- thousandth of a ampere
Milliampere
Resistance
Electromagnet
Ohm's Law
16. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Natural Magnet
Ohmmeter
Factors Governing Resistance
Alternator
17. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Parallel Circuit
Shells
Series Circuit
Primary Cell
18. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Millivolt
Fuse
Coulomb
Voltmeter
19. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Horsepower
Leading Current
Electromagnet
20. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Factors Governing Resistance
Electromagnetic Induction
Proton
Magnetism
21. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Magnetic Circuit
Frequency
Short Circuit
22. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Frequency
Primary Cell
Bimetallic Strip
Short Circuit
23. Opposition to current flow
Resistance
Potential Difference
Voltmeter
Electron Flow
24. 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.
Horsepower
Power
Shells
Rotor
25. One- thousandth of volt.
Residual Magnetism
Millivolt
Leading Current
Atom
26. Single POSITIVE electrical charge - located in the middle of an atom.
Volt
Proton
Impedance
Ampere
27. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Mega Ohm
Micro Ampere
Bound Electrons
Meter
28. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
'Crose Phase'
Transformer
Lagging Current
Shells
29. 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.
Voltage Drop
Armature
Mega Ohm
Permanent Magnet
30. The center portion of an atom which has a positive electrical charge.
Magnetic Field
Voltmeter
Nucleus
Residual Magnetism
31. The space around a magnet in which the magnetic force is felt.
Parallel Circuit
Magnetic Field
Step- Down Transformer
Electro- Motive Force
32. A measuring device.
Fuse
Ampere
Meter
Natural Magnet
33. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Condenser
Electron
Step-Up Transformer
Residual Magnetism
34. The number of cycles per second. Example: 60 cycles per second alternating current.
Step-Up Transformer
Frequency
Series Circuit
Electrode
35. A circuit with more than one path. Current branches to flow in every available path.
Bimetallic Strip
Electrode
Parallel Circuit
Power
36. Total and complete opposition to the flow of electrons
Micro Ampere
Impedance
Residual Magnetism
Proton
37. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Free Electrons
Step- Down Transformer
Positive Plate
38. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Shells
Factors Governing Resistance
Condenser
Resistance
39. 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
'Crose Phase'
Current
Primary Winding
40. A material that has many free electrons thus allowing electric current to flow through it easily.
Potential Difference
Static Electrical Charge
Ohm's Law
Conductor
41. The property of a material that opposes the flow of current.
Series Circuit
Resistance
Shells
Step- Down Transformer
42. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Factors governing the Value of EMF of a Generator
Ohm
Step-Up Transformer
Lines of Force
43. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Wattmeter
Magnetic Lines of Force
Secondary Cell
Current
44. The unit of Electro- Motive Force
Resistor
Volt
Kilowatt
Primary Winding
45. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Static Electrical Charge
Primary Cell
Frequency
Step-Up Transformer
46. 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.
Electrolyte
Resistor
Potential Difference
Proton
47. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Electron
Plates
Secondary Winding
Voltage Drop
48. Several secondary cells connected together for either a greater voltage or current output.
Magnetic Poles
Free Electrons
Milliampere
Storage Battery
49. A circuit in which there is resistance (load) connected both in series and parallel.
Ohm's Law
Series - Parallel Circuit
Rheostat
Magnetic Lines of Force
50. 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.
Kilowatt Hour
'Crose Phase'
Primary Cell
Valance Electron