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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. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Alternator
Permanent Magnet
Plates
Watt
2. One millionth of a volt.
Ohm
Insulator
Micro Volt
Nucleus
3. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Circuit
Atom
Electron
Secondary Winding
4. 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.
Electric Generator
Resistance
Electron
Voltage Drop
5. The rotating member of an electrical machine.
Artificial Magnet
Magnetic Lines of Force
Rotor
Residual Magnetism
6. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Potential Difference
Storage Battery
Series - Parallel Circuit
Short Circuit
7. Occurs when a stream of electrons are caused to move through a conductor.
Volt
Current
Coulomb
Series - Parallel Circuit
8. The center portion of an atom which has a positive electrical charge.
Permanent Magnet
Mega Ohm
Bimetallic Strip
Nucleus
9. An instrument for measuring electric current
Electron
Volt
Armature
Amp Meter
10. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electron
Lagging Current
Step- Down Transformer
Voltmeter
11. 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.
Resistor
Magnetic Lines of Force
Natural Magnet
Series Circuit
12. One millionth of an ohm.
'Crose Phase'
Lagging Current
Series - Parallel Circuit
Micro Ohm
13. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Bound Electrons
Fuse
Circuit
14. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Valance Electron
Primary Cell
Ohm's Law
Electromagnet
15. A unit of POWER. 1 kilowatt = 1 -000 watts
Kilowatt
Condenser
Magnetic Pole
Electron Flow
16. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Ampere
Mega Ohm
Resistance
Factors Governing Resistance
17. A device used to change the voltage of an alternating current circuit.
Horsepower
Factors governing the Value of EMF of a Generator
Transformer
Magnetic Circuit
18. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Electromagnetic Induction
Fuse
Volt
Kilowatt Hour
19. The number of cycles per second. Example: 60 cycles per second alternating current.
Electrolyte
Magnetism
Frequency
Series - Parallel Circuit
20. Positive charge of electricity. Located in the nucleus of the atom.
Micro Ampere
Proton
Millivolt
Residual Magnetism
21. The area surrounding a magnet in which magnetic properties are exhibited
Power
Electrolyte
Magnetic Field
Coulomb
22. Opposition to current flow
Magnetic Field
Resistance
Natural Magnet
Impedance
23. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Storage Battery
Electric Generator
Alternator
Step-Up Transformer
24. A rate of movement of electrons through a conductor.
Current
Impedance
Positive Plate
Leading Current
25. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Alternator
Three -Phase Circuit
Static Electrical Charge
26. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Alternating Current
Voltage Drop
Lines of Force
27. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Electron
Micro Ohm
Magnetic Circuit
Electric Generator
28. Negative charge of electricity
Impedance
Electron
Magnetic Circuit
Magnetism
29. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Series Circuit
Proton
Three -Phase Circuit
Proton
30. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Free Electrons
Resistance
Series - Parallel Circuit
Magnetic Circuit
31. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Rheostat
Series Circuit
Static Electrical Charge
32. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Kilowatt Hour
Magnetic Pole
Step-Up Transformer
33. Several secondary cells connected together for either a greater voltage or current output.
Storage Battery
Positive Plate
Rheostat
Resistor
34. A complete sequence of events - as an alternating- current cycle.
Cycle
Magnetic Circuit
Amp Meter
Electron
35. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Series - Parallel Circuit
Residual Magnetism
Watt
Lines of Force
36. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Shells
Magnetic Material
Atom
Horsepower
37. Total and complete opposition to the flow of electrons
Ampere
Impedance
Voltage Drop
Kilowatt
38. 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
Electric Generator
Armature
Alternator
39. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Alternating Current
Coulomb
Insulator
Shells
40. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Electrode
Insulator
Magnetic Lines of Force
41. 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
Electrical Circuit
Volt
Voltage Drop
Electron
42. A resistor designed so that its resistance is readily adjusted.
Rheostat
Magnetism
Primary Cell
Free Electrons
43. Lines representing the direction of the magnetic force in a magnetic field.
Parallel Circuit
Magnetic Lines of Force
Molecule
Impedance
44. A circuit with two or more paths for the current to take.
Lagging Current
Free Electrons
Parallel Circuit
Primary Winding
45. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Alternating Current
Secondary Winding
Condenser
Storage Battery
46. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Molecule
Current
Coulomb
Fuse
47. Coil connected to the source of power on a transformer.
Primary Winding
Resistance
Electron
Permanent Magnet
48. Meter used to measure resistance in an electrical circuit.
Kilowatt
Free Electrons
Ohmmeter
Cycle
49. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Electrical Circuit
Magnetism
Milliampere
Parallel Circuit
50. One- thousandth of volt.
Series Circuit
Electrical Circuit
Millivolt
Primary Cell