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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 rate of movement of electrons through a conductor.
Resistance
Watt
Current
Transformer
2. Several secondary cells connected together for either a greater voltage or current output.
Rheostat
Parallel Circuit
Micro Ampere
Storage Battery
3. A unit of power.
Volt
Watt
Transformer
Factors governing the Value of EMF of a Generator
4. 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.
Watt
Potential Difference
Factors governing the Value of EMF of a Generator
Alternating Current
5. Shows relationship between Current - Voltage - Wattage and Resistance.
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6. 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.
Valance Electron
Series - Parallel Circuit
Resistance
Amp Meter
7. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electron Flow
Lagging Current
Cycle
Resistance
8. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Condenser
Voltmeter
Free Electrons
Magnetic Poles
9. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Parallel Circuit
Electrode
Step- Down Transformer
10. The part of the magnet where the magnetic force is most concentrated. Commonly referred to as the North or South pole or the positive or negative poles)
Magnetic Pole
Fuse
Permanent Magnet
Magnetic Material
11. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Circuit
Wattmeter
Horsepower
Free Electrons
12. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Bound Electrons
Electrolyte
Coulomb
Secondary Cell
13. Opposition to current flow
Magnetic Pole
Free Electrons
Resistance
Electrolyte
14. 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.
Factors governing the Value of EMF of a Generator
Proton
Secondary Winding
Series Circuit
15. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Armature
Alternator
Rotor
Parallel Circuit
16. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Alternating Current
Electrolyte
Magnetic Field
Free Electrons
17. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Power
Impedance
Insulator
18. Smallest part a substance can physically divided into composed of 2 or more atoms.
Coulomb
Molecule
Electromagnetic Induction
Magnetism
19. Iron and certain alloys of iron which are magnetized by artificial means.
Artificial Magnet
Factors governing the Value of EMF of a Generator
Series - Parallel Circuit
Milliampere
20. 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.
Electrode
Voltage Drop
Short Circuit
Potential Difference
21. 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.
Valance Electron
Bimetallic Strip
Rheostat
Electron Flow
22. 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.
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23. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Permanent Magnet
Leading Current
Transformer
Series Circuit
24. Total and complete opposition to the flow of electrons
Alternator
Parallel Circuit
Impedance
Electromagnet
25. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Voltage Drop
Ampere
Lines of Force
Residual Magnetism
26. 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.
Volt
Micro Ampere
Kilowatt
Shells
27. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Natural Magnet
Circuit
Kilowatt Hour
Static Electrical Charge
28. Coil connected to the source of power on a transformer.
Rotor
Step- Down Transformer
Primary Winding
'Crose Phase'
29. One million ohms.
Fuse
Armature
Storage Battery
Mega Ohm
30. 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.
Atom
Bound Electrons
Resistance
Power
31. A circuit with two or more paths for the current to take.
Natural Magnet
Parallel Circuit
Electron
Electrolyte
32. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Voltage Drop
Plates
Free Electrons
33. The dissimilar metals which are placed in an electrolyte to form a cell.
Factors Governing Resistance
Electrode
Meter
Primary Cell
34. Occurs when a stream of electrons are caused to move through a conductor.
Current
Amp Meter
Millivolt
Horsepower
35. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Amp Meter
Wattmeter
Voltmeter
Cycle
36. The space around a magnet in which the magnetic force is felt.
Proton
Plates
Milliampere
Magnetic Field
37. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Current
Condenser
Magnetism
Conductor
38. A generator that produces alternating current.
Ohm's Law
Bound Electrons
Electrode
Alternator
39. One- thousandth of volt.
Millivolt
Amp Meter
Impedance
Insulator
40. A circuit with more than one path. Current branches to flow in every available path.
Permanent Magnet
Horsepower
Parallel Circuit
Voltage Drop
41. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ohm's Law
Ampere
Current
Series Circuit
42. An alternating current which current cycle begins later that its voltage cycle.
Resistance
Lagging Current
Frequency
Natural Magnet
43. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Micro Ohm
Residual Magnetism
Resistance
Primary Cell
44. Lines representing the direction of the magnetic force in a magnetic field.
Plates
Watt
Magnetic Lines of Force
Atom
45. Positive charge of electricity. Located in the nucleus of the atom.
Condenser
Proton
Meter
Ohm
46. Single POSITIVE electrical charge - located in the middle of an atom.
Storage Battery
Leading Current
Current
Proton
47. The center portion of an atom which has a positive electrical charge.
Magnetic Circuit
Volt
Ohm's Law
Nucleus
48. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Coulomb
Voltage Drop
Condenser
Static Electrical Charge
49. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Power
Electron
Step- Down Transformer
Step-Up Transformer
50. A material that has many free electrons thus allowing electric current to flow through it easily.
Electromagnetic Induction
Nucleus
Natural Magnet
Conductor