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Test your basic knowledge |
Basic Electricity Vocab
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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. Single POSITIVE electrical charge - located in the middle of an atom.
Electron
Ohm's Law
Proton
Transformer
2. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Coulomb
Valance Electron
Horsepower
Step- Down Transformer
3. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Factors Governing Resistance
Factors governing the Value of EMF of a Generator
Valance Electron
Electron Flow
4. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Leading Current
Natural Magnet
Bimetallic Strip
Short Circuit
5. A material which can be magnetized - principally iron.
Magnetic Material
Fuse
Factors Governing Resistance
Alternating Current
6. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Conductor
Static Electrical Charge
Kilowatt
Alternating Current
7. A device used to change the voltage of an alternating current circuit.
Nucleus
Transformer
Electrolyte
Permeability
8. 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
Condenser
Voltage Drop
Molecule
9. The center portion of an atom which has a positive electrical charge.
Nucleus
Magnetic Field
Non - Magnetic Material
Amp Meter
10. Iron and certain alloys of iron which are magnetized by artificial means.
Natural Magnet
Electrode
Artificial Magnet
Resistance
11. Smallest part a substance can physically divided into composed of 2 or more atoms.
Secondary Winding
Molecule
Permanent Magnet
Magnetic Field
12. A measuring device.
Rheostat
Meter
Conductor
Leading Current
13. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Leading Current
Magnetic Circuit
Micro Ampere
Electromagnet
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.
Kilowatt
Valance Electron
Micro Ampere
Leading Current
15. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Micro Ohm
Horsepower
Volt
16. The dissimilar metals which are placed in an electrolyte to form a cell.
Electrode
Permeability
Rheostat
Plates
17. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Nucleus
Plates
Lines of Force
Magnetic Field
18. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Cycle
Meter
Rotor
19. One millionth of an ampere.
Alternating Current
Electrolyte
Voltmeter
Micro Ampere
20. The unit of Electro- Motive Force
Mega Ohm
Electric Generator
Micro Ohm
Volt
21. One- thousandth of a ampere
Magnetic Field
Milliampere
Electrode
Leading Current
22. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Three -Phase Circuit
Watt
Resistance
23. The area surrounding a magnet in which magnetic properties are exhibited
Wattmeter
Fuse
Current
Magnetic Field
24. 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.
Power
Lines of Force
Magnetic Material
Magnetic Circuit
25. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrolyte
Horsepower
Volt
Resistance
26. 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)
Series Circuit
Current
Voltmeter
Magnetic Pole
27. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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28. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Natural Magnet
Electron
Resistance
Magnetic Poles
29. A rate of movement of electrons through a conductor.
Factors governing the Value of EMF of a Generator
Free Electrons
Magnetic Circuit
Current
30. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Nucleus
Step- Down Transformer
Voltmeter
Magnetic Poles
31. A circuit with two or more paths for the current to take.
Micro Ohm
Watt
Millivolt
Parallel Circuit
32. A generator that produces alternating current.
Alternator
Resistance
Electron
Magnetic Circuit
33. Meter used to measure resistance in an electrical circuit.
Series Circuit
Kilowatt
Mega Ohm
Ohmmeter
34. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Electro- Motive Force
Magnetic Lines of Force
Wattmeter
Static Electrical Charge
35. In a battery - the electrode which takes up the electrons returning from the external circuit.
Electrical Circuit
Positive Plate
Magnetism
Voltmeter
36. The property of a material that opposes the flow of current.
Electron
Storage Battery
Resistance
Fuse
37. A resistor designed so that its resistance is readily adjusted.
Conductor
Rheostat
Magnetic Material
Nucleus
38. Occurs when a stream of electrons are caused to move through a conductor.
Current
Potential Difference
Plates
Lines of Force
39. 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.
Conductor
Electric Generator
Electromagnet
Parallel 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.
Impedance
Resistor
Shells
Molecule
41. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Plates
Resistor
Step-Up Transformer
42. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Alternating Current
Parallel Circuit
Micro Ohm
Plates
43. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Magnetism
Volt
Magnetic Field
44. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electromagnet
Voltage Drop
Molecule
Electric Generator
45. The space around a magnet in which the magnetic force is felt.
Leading Current
Voltage Drop
Magnetic Field
Magnetic Poles
46. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Residual Magnetism
Lagging Current
Electron
'Crose Phase'
47. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Volt
Resistor
Short Circuit
Positive Plate
48. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Ohm's Law
Coulomb
Primary Cell
Transformer
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.
Current
Voltage Drop
Meter
Magnetism
50. Lines representing the direction of the magnetic force in a magnetic field.
Horsepower
Magnetic Material
Magnetic Lines of Force
Volt