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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. One- thousandth of a ampere
Leading Current
Potential Difference
Milliampere
Ampere
2. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Molecule
Amp Meter
Secondary Cell
3. 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.
Electron Flow
Mega Ohm
Magnetic Field
Electromagnet
4. A material which can be magnetized - principally iron.
Resistance
Magnetic Material
Static Electrical Charge
Permeability
5. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Electromagnetic Induction
Magnetic Pole
Impedance
6. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
7. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Rotor
Electromagnetic Induction
Atom
Permeability
8. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Horsepower
Step- Down Transformer
Non - Magnetic Material
Bimetallic Strip
9. A circuit with two or more paths for the current to take.
Artificial Magnet
Micro Ohm
Volt
Parallel Circuit
10. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Insulator
Parallel Circuit
Voltmeter
11. One million ohms.
Volt
Series Circuit
Lagging Current
Mega Ohm
12. The unit of Electro- Motive Force
Volt
Resistor
Kilowatt Hour
Bimetallic Strip
13. An instrument for measuring electric current
Amp Meter
Micro Ampere
Voltage Drop
Magnetism
14. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electric Generator
Permanent Magnet
Non - Magnetic Material
Potential Difference
15. A rate of movement of electrons through a conductor.
Meter
Magnetic Poles
Current
Magnetic Lines of Force
16. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Lagging Current
Parallel Circuit
Wattmeter
Residual Magnetism
17. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Proton
Condenser
Kilowatt Hour
Electrode
18. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Static Electrical Charge
Electron
Voltmeter
Coulomb
19. Negative charge of electricity
Electron
Micro Ohm
Short Circuit
Magnetic Lines of Force
20. One millionth of a volt.
Electron
Ohmmeter
Factors Governing Resistance
Micro Volt
21. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Proton
Rotor
Armature
Free Electrons
22. A material with few free electrons. A structure or material used to prevent the passage of current.
Horsepower
Storage Battery
Insulator
Lines of Force
23. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Plates
Micro Ohm
Ohm
Shells
24. A unit of power.
Watt
Alternator
Proton
Artificial Magnet
25. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Fuse
Static Electrical Charge
Volt
26. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Resistance
Natural Magnet
Voltmeter
Lagging Current
27. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Primary Winding
Kilowatt Hour
Wattmeter
Permanent Magnet
28. 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.
Current
Micro Ampere
Series Circuit
Wattmeter
29. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Residual Magnetism
Alternating Current
Free Electrons
Current
30. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Millivolt
Electromagnet
Electron Flow
Primary Winding
31. One millionth of an ohm.
Proton
Magnetic Field
Non - Magnetic Material
Micro Ohm
32. Total and complete opposition to the flow of electrons
Artificial Magnet
Ohm
Impedance
Alternator
33. Shows relationship between Current - Voltage - Wattage and Resistance.
34. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Resistor
Transformer
Lagging Current
Electro- Motive Force
35. The space around a magnet in which the magnetic force is felt.
Magnetic Field
Watt
Current
Secondary Winding
36. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Magnetic Pole
Wattmeter
Fuse
Alternator
37. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Electron
Electron Flow
Short Circuit
Residual Magnetism
38. Lines representing the direction of the magnetic force in a magnetic field.
Series Circuit
Storage Battery
Kilowatt Hour
Magnetic Lines of Force
39. The dissimilar metals which are placed in an electrolyte to form a cell.
Non - Magnetic Material
Parallel Circuit
Electrode
Meter
40. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Free Electrons
Potential Difference
Series Circuit
41. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Cycle
Parallel Circuit
Magnetic Material
42. A circuit with more than one path. Current branches to flow in every available path.
Watt
Parallel Circuit
Millivolt
Storage Battery
43. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Amp Meter
Secondary Winding
Ohm's Law
Positive Plate
44. Several secondary cells connected together for either a greater voltage or current output.
Bound Electrons
Storage Battery
Short Circuit
Voltmeter
45. An alternating current which current cycle begins earlier than its voltage cycle.
Electromagnetic Induction
Leading Current
Series - Parallel Circuit
Rotor
46. One millionth of an ampere.
Electron
Impedance
Coulomb
Micro Ampere
47. 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.
48. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Magnetic Field
Conductor
Non - Magnetic Material
Electrode
49. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Volt
Proton
Plates
Rotor
50. Iron and certain alloys of iron which are magnetized by artificial means.
Watt
Storage Battery
Artificial Magnet
Condenser