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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 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
Magnetism
Millivolt
Valance Electron
2. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Valance Electron
Magnetism
Lagging Current
3. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Voltmeter
Lagging Current
Bimetallic Strip
Short Circuit
4. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Power
Positive Plate
Voltmeter
5. 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
Ohm
Ohm's Law
Ohmmeter
6. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Step- Down Transformer
Electromagnetic Induction
Voltage Drop
Valance Electron
7. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Voltage Drop
Positive Plate
Secondary Winding
Three -Phase Circuit
8. One millionth of an ohm.
Electron
Micro Ohm
Free Electrons
Factors Governing Resistance
9. Opposition to current flow
Resistance
Natural Magnet
Electric Generator
Parallel Circuit
10. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Impedance
Magnetic Field
Voltage Drop
Permeability
11. A material which can be magnetized - principally iron.
Transformer
Fuse
Atom
Magnetic Material
12. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Ohm
Horsepower
Fuse
Plates
13. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Natural Magnet
Lagging Current
Factors governing the Value of EMF of a Generator
Magnetic Poles
14. Iron and certain alloys of iron which are magnetized by artificial means.
Ohm
Atom
Artificial Magnet
Micro Ampere
15. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Resistance
Electron
Primary Cell
Free Electrons
16. A rate of movement of electrons through a conductor.
Circuit
Mega Ohm
Voltmeter
Current
17. Lines representing the direction of the magnetic force in a magnetic field.
Micro Volt
Frequency
Permeability
Magnetic Lines of Force
18. An instrument for measuring electric current
Kilowatt
Electromagnetic Induction
Amp Meter
Magnetic Material
19. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Armature
Rheostat
Condenser
Micro Ampere
20. 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.
Potential Difference
Valance Electron
Wattmeter
Rheostat
21. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Transformer
Horsepower
Primary Cell
Armature
22. 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.
Molecule
Electromagnet
Frequency
Magnetic Circuit
23. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Volt
Condenser
Primary Cell
Current
24. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Free Electrons
Plates
Circuit
Electron Flow
25. Single POSITIVE electrical charge - located in the middle of an atom.
Alternator
Proton
Ampere
Micro Volt
26. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Resistor
Factors governing the Value of EMF of a Generator
Lines of Force
Magnetic Lines of Force
27. One millionth of an ampere.
Micro Ampere
Electrode
Primary Winding
Artificial Magnet
28. Several secondary cells connected together for either a greater voltage or current output.
Electrolyte
Residual Magnetism
Storage Battery
Magnetic Material
29. One million ohms.
Electromagnet
Ohmmeter
Natural Magnet
Mega Ohm
30. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electron
Voltage Drop
Valance Electron
Electron Flow
31. In a battery - the electrode which takes up the electrons returning from the external circuit.
Positive Plate
Power
Permanent Magnet
Step-Up Transformer
32. The space around a magnet in which the magnetic force is felt.
Ampere
Cycle
Magnetic Field
Static Electrical Charge
33. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Ohmmeter
Free Electrons
Micro Volt
34. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
'Crose Phase'
Atom
Lines of Force
Power
35. The area surrounding a magnet in which magnetic properties are exhibited
Magnetic Field
Leading Current
Step- Down Transformer
Molecule
36. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Series Circuit
Electron Flow
Secondary Winding
Ampere
37. Positive charge of electricity. Located in the nucleus of the atom.
Shells
Proton
Magnetic Poles
Micro Ampere
38. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Magnetic Pole
Series Circuit
Volt
39. Shows relationship between Current - Voltage - Wattage and Resistance.
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40. One- thousandth of volt.
Millivolt
Horsepower
Electrode
Plates
41. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Insulator
Condenser
Three -Phase Circuit
42. Occurs when a stream of electrons are caused to move through a conductor.
Magnetic Material
Current
Parallel Circuit
Leading Current
43. The number of cycles per second. Example: 60 cycles per second alternating current.
Primary Winding
Frequency
Micro Ampere
Series Circuit
44. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Series Circuit
Power
Impedance
Static Electrical Charge
45. A resistor designed so that its resistance is readily adjusted.
Mega Ohm
Magnetic Pole
Rheostat
Non - Magnetic Material
46. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Magnetic Field
Magnetic Circuit
Electromagnet
Resistor
47. 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.
Primary Winding
Atom
Artificial Magnet
Voltage Drop
48. A circuit with only one path for current to flow. There are no branches.
Ohm's Law
Ohmmeter
Leading Current
Series Circuit
49. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Conductor
Natural Magnet
Step-Up Transformer
Ohmmeter
50. Smallest part a substance can physically divided into composed of 2 or more atoms.
Primary Winding
Parallel Circuit
Magnetic Pole
Molecule