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Test your basic knowledge |
Basic Electricity Vocab
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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 unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Millivolt
Kilowatt Hour
Parallel Circuit
Transformer
2. A device used to change the voltage of an alternating current circuit.
Transformer
Cycle
Volt
Molecule
3. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Factors governing the Value of EMF of a Generator
Kilowatt Hour
Electromagnetic Induction
4. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Electromagnetic Induction
Magnetic Poles
Kilowatt Hour
Watt
5. 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.
Electrolyte
Ohm
Bimetallic Strip
Frequency
6. One millionth of a volt.
Permanent Magnet
Magnetic Pole
Magnetic Lines of Force
Micro Volt
7. 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
Magnetism
Power
Ohm's Law
8. Total and complete opposition to the flow of electrons
'Crose Phase'
Mega Ohm
Proton
Impedance
9. A material that has many free electrons thus allowing electric current to flow through it easily.
Micro Volt
Conductor
Condenser
Magnetic Field
10. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
'Crose Phase'
Lines of Force
Ohmmeter
Armature
11. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Electron Flow
Lines of Force
Micro Volt
12. An instrument for measuring electric current
Electromagnet
Lagging Current
Amp Meter
Voltmeter
13. One millionth of an ohm.
Amp Meter
Power
Micro Ohm
Permanent Magnet
14. 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.
Milliampere
Valance Electron
Electric Generator
Voltmeter
15. Occurs when a stream of electrons are caused to move through a conductor.
Magnetism
Electron
Current
Rotor
16. An alternating current which current cycle begins later that its voltage cycle.
Ohm
Proton
Lagging Current
Permanent Magnet
17. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Step- Down Transformer
Static Electrical Charge
Free Electrons
Potential Difference
18. Iron and certain alloys of iron which are magnetized by artificial means.
Natural Magnet
Cycle
Lines of Force
Artificial Magnet
19. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Kilowatt
Voltmeter
Secondary Cell
Static Electrical Charge
20. 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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21. One millionth of an ampere.
Micro Ampere
Factors Governing Resistance
Voltage Drop
Voltmeter
22. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Watt
Parallel Circuit
Insulator
Voltage Drop
23. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Electron Flow
Shells
Micro Volt
Horsepower
24. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Electromagnet
Residual Magnetism
'Crose Phase'
Step-Up Transformer
25. 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
Step-Up Transformer
Conductor
Kilowatt Hour
26. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Resistance
Parallel Circuit
Wattmeter
Circuit
27. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Step-Up Transformer
Three -Phase Circuit
Coulomb
Electromagnetic Induction
28. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Ohm's Law
Natural Magnet
Electron Flow
Magnetic Lines of Force
29. A material which can be magnetized - principally iron.
Magnetic Material
Insulator
Ampere
Electromagnetic Induction
30. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Resistor
Conductor
Parallel Circuit
Cycle
31. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Kilowatt Hour
Alternating Current
Electrolyte
32. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Horsepower
Permanent Magnet
Plates
Impedance
33. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Voltage Drop
Short Circuit
Plates
Alternating Current
34. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Short Circuit
Magnetic Circuit
Valance Electron
Horsepower
35. A unit of power.
Frequency
Voltage Drop
Watt
Mega Ohm
36. A resistor designed so that its resistance is readily adjusted.
Molecule
Rheostat
Bimetallic Strip
Magnetic Circuit
37. Negative charge of electricity
Micro Volt
Free Electrons
Electron
Ohmmeter
38. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Residual Magnetism
Plates
Atom
Permeability
39. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Meter
Primary Winding
Series Circuit
Natural Magnet
40. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Voltage Drop
Magnetic Poles
Magnetic Circuit
Step- Down Transformer
41. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Secondary Winding
Permanent Magnet
Atom
Free Electrons
42. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Factors governing the Value of EMF of a Generator
Resistance
Series Circuit
Millivolt
43. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Electron
Volt
Factors Governing Resistance
44. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Ohm's Law
Resistor
Lines of Force
Series Circuit
45. 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
Alternating Current
Atom
Permanent Magnet
46. The space around a magnet in which the magnetic force is felt.
Voltmeter
Resistance
Magnetic Field
Volt
47. 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.
Alternator
Micro Volt
Potential Difference
Series Circuit
48. Shows relationship between Current - Voltage - Wattage and Resistance.
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49. 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
Free Electrons
Bound Electrons
Volt
50. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Resistor
Residual Magnetism
Conductor
Permeability