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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. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Condenser
Bimetallic Strip
Voltmeter
Volt
2. The center portion of an atom which has a positive electrical charge.
Storage Battery
Nucleus
Valance Electron
Magnetism
3. One million ohms.
Step-Up Transformer
Electron
Series - Parallel Circuit
Mega Ohm
4. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Meter
Transformer
Step- Down Transformer
Bound Electrons
5. Positive charge of electricity. Located in the nucleus of the atom.
Wattmeter
Proton
Millivolt
Valance Electron
6. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Electrolyte
Alternator
Electro- Motive Force
Proton
7. A resistor designed so that its resistance is readily adjusted.
Voltage Drop
Rheostat
Electron Flow
Three -Phase Circuit
8. The space around a magnet in which the magnetic force is felt.
Magnetic Field
Insulator
Ohm's Law
Factors governing the Value of EMF of a Generator
9. The liquid solution (sometime a paste) in which the electrodes are placed.
Plates
Milliampere
Electrolyte
Alternating Current
10. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Natural Magnet
Series - Parallel Circuit
Ohm's Law
11. Shows relationship between Current - Voltage - Wattage and Resistance.
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12. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Amp Meter
Plates
Factors Governing Resistance
Step- Down Transformer
13. 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.
Electric Generator
Series Circuit
Frequency
Valance Electron
14. 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.
Micro Volt
Voltage Drop
Kilowatt Hour
Resistance
15. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Short Circuit
Parallel Circuit
Coulomb
Condenser
16. 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 Volt
Series Circuit
Micro Ampere
Resistance
17. Occurs when a stream of electrons are caused to move through a conductor.
Current
Volt
Amp Meter
Lines of Force
18. 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.
Lagging Current
Bimetallic Strip
Circuit
Volt
19. Several secondary cells connected together for either a greater voltage or current output.
Storage Battery
Resistor
Atom
Impedance
20. A measuring device.
Meter
Permeability
Current
Artificial Magnet
21. An instrument for measuring electric current
Electron
Magnetic Lines of Force
Fuse
Amp Meter
22. A circuit with only one path for current to flow. There are no branches.
Series Circuit
Watt
Residual Magnetism
Magnetic Field
23. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Millivolt
Alternator
Ampere
Non - Magnetic Material
24. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Static Electrical Charge
Resistor
Millivolt
25. A circuit with more than one path. Current branches to flow in every available path.
Parallel Circuit
Millivolt
Valance Electron
Impedance
26. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Nucleus
Armature
Series Circuit
Series Circuit
27. A generator that produces alternating current.
Electrode
Alternator
Insulator
Ohm's Law
28. 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.
Leading Current
Bimetallic Strip
Power
Magnetic Material
29. A material that has many free electrons thus allowing electric current to flow through it easily.
Magnetic Field
Conductor
Wattmeter
Shells
30. An alternating current which current cycle begins later that its voltage cycle.
Secondary Winding
Lagging Current
Parallel Circuit
Coulomb
31. Iron and certain alloys of iron which are magnetized by artificial means.
Amp Meter
Artificial Magnet
Magnetic Poles
Frequency
32. In a battery - the electrode which takes up the electrons returning from the external circuit.
Atom
Positive Plate
Voltmeter
Proton
33. A circuit in which there is resistance (load) connected both in series and parallel.
Electrical Circuit
Volt
Series - Parallel Circuit
Voltage Drop
34. 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.
Volt
Proton
Resistance
Electromagnet
35. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Ampere
Lagging Current
Bound Electrons
Kilowatt Hour
36. The number of cycles per second. Example: 60 cycles per second alternating current.
Micro Ohm
Primary Cell
Amp Meter
Frequency
37. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Atom
Magnetic Lines of Force
Secondary Winding
Horsepower
38. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Resistance
Factors Governing Resistance
Amp Meter
Voltage Drop
39. Opposition to current flow
Valance Electron
Resistance
Magnetic Field
Lines of Force
40. Coil connected to the source of power on a transformer.
Coulomb
Resistor
Primary Winding
Current
41. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Ohm's Law
Residual Magnetism
Proton
Potential Difference
42. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Magnetic Poles
Primary Winding
Shells
Ohm's Law
43. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Artificial Magnet
Magnetic Poles
Free Electrons
Volt
44. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Armature
Coulomb
Micro Volt
Shells
45. One millionth of an ohm.
Resistance
Micro Ohm
Series Circuit
Secondary Cell
46. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Conductor
Three -Phase Circuit
Kilowatt Hour
Mega Ohm
47. Meter used to measure resistance in an electrical circuit.
Kilowatt
Ohmmeter
Insulator
Condenser
48. A device used to change the voltage of an alternating current circuit.
Transformer
Valance Electron
Impedance
Electric Generator
49. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Lines of Force
Series Circuit
Power
50. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetic Material
Magnetism
Meter
Leading Current