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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 material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Proton
Wattmeter
Atom
2. 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.
Rotor
Valance Electron
Ohm
Plates
3. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Ampere
Cycle
Electron Flow
4. A unit of POWER. 1 kilowatt = 1 -000 watts
Kilowatt
Magnetic Field
Permeability
Electrolyte
5. In a battery - the electrode which takes up the electrons returning from the external circuit.
Valance Electron
Electric Generator
Alternator
Positive Plate
6. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Condenser
Factors governing the Value of EMF of a Generator
Millivolt
7. The number of cycles per second. Example: 60 cycles per second alternating current.
Horsepower
Shells
Frequency
Voltmeter
8. 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.
Circuit
Potential Difference
Fuse
Electromagnetic Induction
9. One- thousandth of volt.
Armature
Millivolt
Primary Winding
Series Circuit
10. An instrument for measuring electric current
Factors governing the Value of EMF of a Generator
Amp Meter
Magnetic Poles
Secondary Cell
11. A material which can be magnetized - principally iron.
Series - Parallel Circuit
Atom
Magnetic Material
Electrode
12. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Magnetic Material
Residual Magnetism
Millivolt
13. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electron
Amp Meter
Bound Electrons
Millivolt
14. 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.
Voltmeter
Factors governing the Value of EMF of a Generator
Electro- Motive Force
Power
15. 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
Voltmeter
Electrical Circuit
Fuse
Three -Phase Circuit
16. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Condenser
Electric Generator
Factors Governing Resistance
17. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Lagging Current
Secondary Winding
Non - Magnetic Material
Permanent Magnet
18. A circuit with two or more paths for the current to take.
Electron Flow
Parallel Circuit
Leading Current
Valance Electron
19. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Ohm's Law
Short Circuit
Alternator
20. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Lagging Current
Series Circuit
Proton
Kilowatt Hour
21. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Artificial Magnet
Electron
Series Circuit
Ampere
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.
Magnetic Field
Mega Ohm
Electromagnet
Kilowatt
23. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.
Voltmeter
Bimetallic Strip
Frequency
Electromagnet
24. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Horsepower
Primary Cell
Electron Flow
Plates
25. A device used to change the voltage of an alternating current circuit.
Transformer
Resistor
Secondary Cell
Positive Plate
26. A unit of power.
Primary Cell
Resistor
Watt
Atom
27. A circuit with more than one path. Current branches to flow in every available path.
Parallel Circuit
Molecule
Free Electrons
Proton
28. 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.
Magnetic Lines of Force
Volt
Kilowatt
Mega Ohm
29. The dissimilar metals which are placed in an electrolyte to form a cell.
Electrode
Magnetic Field
Mega Ohm
Permanent Magnet
30. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Permanent Magnet
Factors governing the Value of EMF of a Generator
Natural Magnet
Alternating Current
31. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Circuit
Voltage Drop
Magnetism
Resistance
32. The rotating member of an electrical machine.
Rotor
Positive Plate
Resistance
Amp Meter
33. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Magnetic Pole
Artificial Magnet
Electron Flow
Shells
34. A generator that produces alternating current.
Power
Atom
Alternator
Magnetic Lines of Force
35. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Milliampere
Kilowatt Hour
Secondary Winding
Circuit
36. A material that has many free electrons thus allowing electric current to flow through it easily.
Amp Meter
Secondary Winding
Conductor
Primary Cell
37. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Electron
Step- Down Transformer
Secondary Winding
Magnetic Lines of Force
38. A material with few free electrons. A structure or material used to prevent the passage of current.
Magnetic Poles
Step-Up Transformer
Insulator
Non - Magnetic Material
39. Negative charge of electricity
Permeability
Electron
Wattmeter
Series Circuit
40. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Magnetic Circuit
Secondary Cell
Shells
Natural Magnet
41. Iron and certain alloys of iron which are magnetized by artificial means.
Artificial Magnet
Magnetic Poles
Resistance
Proton
42. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Natural Magnet
Fuse
Parallel Circuit
Voltmeter
43. The liquid solution (sometime a paste) in which the electrodes are placed.
Rotor
Transformer
Potential Difference
Electrolyte
44. The property of a material that opposes the flow of current.
Current
Resistance
Current
Electrical Circuit
45. The space around a magnet in which the magnetic force is felt.
Alternator
Magnetic Field
Millivolt
Short Circuit
46. Smallest part a substance can physically divided into composed of 2 or more atoms.
Molecule
Lines of Force
Current
Fuse
47. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Micro Volt
Plates
Armature
Proton
48. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Milliampere
Residual Magnetism
Rotor
Series - Parallel Circuit
49. The unit of Electro- Motive Force
Condenser
Electron Flow
Bimetallic Strip
Volt
50. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Plates
Static Electrical Charge
Secondary Cell
Magnetic Material