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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. Lines representing the direction of the magnetic force in a magnetic field.
Electromagnet
Insulator
Plates
Magnetic Lines of Force
2. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Wattmeter
Static Electrical Charge
Current
Nucleus
3. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Millivolt
Current
Three -Phase Circuit
Volt
4. Smallest part a substance can physically divided into composed of 2 or more atoms.
Molecule
Alternator
Voltage Drop
Watt
5. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Electrolyte
Magnetic Field
Cycle
Magnetism
6. A resistor designed so that its resistance is readily adjusted.
Magnetism
Millivolt
Magnetic Pole
Rheostat
7. 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)
Millivolt
Nucleus
Series Circuit
Magnetic Pole
8. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Volt
Mega Ohm
Electro- Motive Force
Bound Electrons
9. A generator that produces alternating current.
Primary Cell
Bound Electrons
Conductor
Alternator
10. A material that has many free electrons thus allowing electric current to flow through it easily.
Ohmmeter
Wattmeter
Magnetic Poles
Conductor
11. Total and complete opposition to the flow of electrons
Magnetic Circuit
Secondary Cell
Impedance
Free Electrons
12. Coil connected to the source of power on a transformer.
Electrical Circuit
Primary Winding
Conductor
Mega Ohm
13. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Molecule
Free Electrons
Ohm's Law
Artificial Magnet
14. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Ampere
Mega Ohm
Magnetic Circuit
Secondary Winding
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
Atom
Mega Ohm
Magnetic Pole
Electrical Circuit
16. 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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17. The dissimilar metals which are placed in an electrolyte to form a cell.
Step-Up Transformer
Electrode
Magnetic Material
Voltage Drop
18. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electron
Volt
Ampere
Armature
19. Several secondary cells connected together for either a greater voltage or current output.
Power
Insulator
Storage Battery
Amp Meter
20. Negative charge of electricity
Electron
Residual Magnetism
Positive Plate
Volt
21. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Coulomb
Factors Governing Resistance
Volt
Natural Magnet
22. One million ohms.
Mega Ohm
Short Circuit
Ohm's Law
Positive Plate
23. The unit of Electro- Motive Force
Three -Phase Circuit
Volt
Lines of Force
Magnetism
24. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Current
Armature
Magnetic Field
Resistance
25. 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.
Positive Plate
Lines of Force
Power
Factors Governing Resistance
26. The liquid solution (sometime a paste) in which the electrodes are placed.
'Crose Phase'
Electrolyte
Ampere
Cycle
27. An alternating current which current cycle begins earlier than its voltage cycle.
Magnetic Field
Micro Volt
Electromagnetic Induction
Leading Current
28. In a battery - the electrode which takes up the electrons returning from the external circuit.
Coulomb
Secondary Winding
Primary Winding
Positive Plate
29. One millionth of a volt.
Kilowatt
Voltage Drop
Electron
Micro Volt
30. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Secondary Winding
Proton
Volt
Condenser
31. A material with few free electrons. A structure or material used to prevent the passage of current.
Ohm
Electrical Circuit
Insulator
Electromagnetic Induction
32. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Watt
Electron Flow
Electromagnet
Rheostat
33. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Kilowatt Hour
Fuse
Horsepower
Mega Ohm
34. The space around a magnet in which the magnetic force is felt.
Magnetic Poles
Primary Cell
Magnetic Field
Permeability
35. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Fuse
Atom
Residual Magnetism
Condenser
36. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Alternator
Resistor
Cycle
Horsepower
37. A device used to change the voltage of an alternating current circuit.
'Crose Phase'
Primary Cell
Cycle
Transformer
38. Iron and certain alloys of iron which are magnetized by artificial means.
Series Circuit
Artificial Magnet
Milliampere
Alternating Current
39. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Voltmeter
Circuit
Residual Magnetism
Short Circuit
40. A material which can be magnetized - principally iron.
Ampere
Bimetallic Strip
Magnetic Material
Frequency
41. 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.
Ohm's Law
Voltage Drop
Magnetic Circuit
Three -Phase Circuit
42. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.
Series Circuit
Free Electrons
Circuit
Non - Magnetic Material
43. A circuit with more than one path. Current branches to flow in every available path.
Alternator
Primary Winding
'Crose Phase'
Parallel Circuit
44. The area surrounding a magnet in which magnetic properties are exhibited
Series Circuit
Step- Down Transformer
Electromagnet
Magnetic Field
45. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Kilowatt Hour
Magnetic Field
Step-Up Transformer
Ohm's Law
46. A unit of POWER. 1 kilowatt = 1 -000 watts
Amp Meter
Lagging Current
Kilowatt
Magnetic Lines of Force
47. The property of a material that opposes the flow of current.
Series Circuit
Magnetic Field
Step-Up Transformer
Resistance
48. An instrument for measuring electric current
Amp Meter
Electrolyte
Secondary Cell
Plates
49. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Kilowatt Hour
Permeability
Resistance
50. A circuit in which there is resistance (load) connected both in series and parallel.
Current
Plates
Residual Magnetism
Series - Parallel Circuit