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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 with two or more paths for the current to take.
Rotor
Current
Parallel Circuit
Electrolyte
2. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Natural Magnet
Nucleus
Series Circuit
'Crose Phase'
3. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Permeability
Conductor
Factors governing the Value of EMF of a Generator
Resistor
4. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Factors governing the Value of EMF of a Generator
Free Electrons
Artificial Magnet
Voltmeter
5. Coil connected to the source of power on a transformer.
Primary Winding
Non - Magnetic Material
Electron Flow
Insulator
6. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Resistance
Series - Parallel Circuit
Valance Electron
7. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Insulator
Nucleus
Storage Battery
8. The dissimilar metals which are placed in an electrolyte to form a cell.
Alternating Current
Nucleus
Electrode
Micro Volt
9. Negative charge of electricity
Electron
Electrolyte
Volt
Storage Battery
10. A generator that produces alternating current.
Alternator
Factors Governing Resistance
Resistance
Magnetism
11. 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
Nucleus
Electrical Circuit
Horsepower
Meter
12. A measuring device.
Transformer
Alternating Current
Meter
Electron
13. A material which can be magnetized - principally iron.
Ampere
Voltage Drop
'Crose Phase'
Magnetic Material
14. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electromagnetic Induction
Natural Magnet
Ohmmeter
Electron
15. The center portion of an atom which has a positive electrical charge.
Electron
Nucleus
Static Electrical Charge
Magnetic Lines of Force
16. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Positive Plate
Bound Electrons
Watt
Power
17. A circuit with more than one path. Current branches to flow in every available path.
Kilowatt
Parallel Circuit
Artificial Magnet
Magnetism
18. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Factors governing the Value of EMF of a Generator
Electrode
'Crose Phase'
19. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Volt
Non - Magnetic Material
Magnetic Lines of Force
Armature
20. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Current
Permeability
Meter
Kilowatt Hour
21. The rotating member of an electrical machine.
Resistor
Step-Up Transformer
Electron
Rotor
22. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electron Flow
Magnetic Lines of Force
Step-Up Transformer
Three -Phase Circuit
23. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Magnetic Field
Insulator
Ampere
Resistance
24. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Permanent Magnet
Ohm
Shells
Lagging Current
25. A unit of POWER. 1 kilowatt = 1 -000 watts
Series - Parallel Circuit
Secondary Winding
Kilowatt
Electron
26. 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.
'Crose Phase'
Ohm's Law
Series Circuit
Condenser
27. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Series Circuit
Fuse
Lines of Force
28. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
'Crose Phase'
Potential Difference
Lines of Force
Step- Down Transformer
29. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Electron
Electron Flow
Magnetism
Residual Magnetism
30. 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
Micro Ampere
Series Circuit
Factors governing the Value of EMF of a Generator
31. An alternating current which current cycle begins earlier than its voltage cycle.
Voltage Drop
Leading Current
Magnetism
Bound Electrons
32. The area surrounding a magnet in which magnetic properties are exhibited
Bound Electrons
Volt
Magnetic Field
Coulomb
33. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Voltage Drop
Magnetic Poles
Voltage Drop
Milliampere
34. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrolyte
Amp Meter
Alternator
Proton
35. Several secondary cells connected together for either a greater voltage or current output.
Insulator
Electrolyte
Permeability
Storage Battery
36. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Secondary Cell
Mega Ohm
Micro Volt
Electromagnet
37. A material that has many free electrons thus allowing electric current to flow through it easily.
Power
Conductor
Horsepower
Voltage Drop
38. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Frequency
Three -Phase Circuit
Molecule
Leading Current
39. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
'Crose Phase'
Series Circuit
Voltmeter
Electromagnet
40. A resistor designed so that its resistance is readily adjusted.
Secondary Winding
'Crose Phase'
Rheostat
Step-Up Transformer
41. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Electrode
Micro Volt
Primary Cell
Alternating Current
42. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Kilowatt Hour
Three -Phase Circuit
Lines of Force
Natural Magnet
43. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Frequency
Molecule
Milliampere
Wattmeter
44. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Leading Current
Storage Battery
Electrical Circuit
45. A rate of movement of electrons through a conductor.
Step- Down Transformer
Watt
Current
Magnetic Poles
46. The space around a magnet in which the magnetic force is felt.
Fuse
Free Electrons
Magnetic Field
Electric Generator
47. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Magnetic Field
Amp Meter
Condenser
Impedance
48. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Non - Magnetic Material
Transformer
Factors governing the Value of EMF of a Generator
Electro- Motive Force
49. The unit of Electro- Motive Force
Volt
Ampere
Wattmeter
Cycle
50. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Current
Step-Up Transformer
Impedance