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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 current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Current
Shells
Alternating Current
Magnetic Poles
2. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Series Circuit
Frequency
Circuit
3. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Magnetic Lines of Force
Permeability
Millivolt
Voltage Drop
4. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Step-Up Transformer
Milliampere
Micro Ohm
Alternating Current
5. 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
Meter
Primary Winding
Static Electrical Charge
6. 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)
Resistance
Valance Electron
Ohmmeter
Magnetic Pole
7. The unit of Electro- Motive Force
Magnetic Field
Permeability
Storage Battery
Volt
8. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Short Circuit
Magnetic Field
Shells
Non - Magnetic Material
9. A circuit in which there is resistance (load) connected both in series and parallel.
Impedance
Series - Parallel Circuit
Molecule
Secondary Winding
10. A circuit with only one path for current to flow. There are no branches.
Molecule
Volt
Series Circuit
Lines of Force
11. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Permanent Magnet
Step-Up Transformer
Factors governing the Value of EMF of a Generator
Ohm's Law
12. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Positive Plate
Magnetism
Electric Generator
Lines of Force
13. The area surrounding a magnet in which magnetic properties are exhibited
Voltmeter
Conductor
Factors governing the Value of EMF of a Generator
Magnetic Field
14. The center portion of an atom which has a positive electrical charge.
Magnetic Circuit
Factors Governing Resistance
Rheostat
Nucleus
15. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Alternating Current
Proton
Electrode
Step- Down Transformer
16. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Non - Magnetic Material
Ohm
Free Electrons
Series Circuit
17. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Volt
Magnetic Pole
Primary Cell
Electrode
18. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Series Circuit
Electron
Kilowatt Hour
Micro Ampere
19. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Series Circuit
Voltmeter
Insulator
Kilowatt Hour
20. A resistor designed so that its resistance is readily adjusted.
Electrode
Rheostat
Electron Flow
Electrolyte
21. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Electron
Magnetic Field
Electromagnetic Induction
22. A measuring device.
Current
Meter
Short Circuit
Current
23. Occurs when a stream of electrons are caused to move through a conductor.
Circuit
Bimetallic Strip
Alternating Current
Current
24. The dissimilar metals which are placed in an electrolyte to form a cell.
Proton
Electrode
Potential Difference
Residual Magnetism
25. 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
Watt
Magnetic Field
Volt
26. 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.
Bound Electrons
Series Circuit
Electrode
Ohm
27. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Wattmeter
Residual Magnetism
Milliampere
Impedance
28. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Short Circuit
Horsepower
Milliampere
Shells
29. Shows relationship between Current - Voltage - Wattage and Resistance.
30. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Millivolt
Electrode
Valance Electron
31. A circuit with more than one path. Current branches to flow in every available path.
Parallel Circuit
Electromagnet
Static Electrical Charge
Frequency
32. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Electric Generator
Ohm
Molecule
Condenser
33. Several secondary cells connected together for either a greater voltage or current output.
Electro- Motive Force
Secondary Cell
Electron
Storage Battery
34. A material that has many free electrons thus allowing electric current to flow through it easily.
Artificial Magnet
Mega Ohm
Conductor
Coulomb
35. Total and complete opposition to the flow of electrons
Voltmeter
Armature
Horsepower
Impedance
36. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Three -Phase Circuit
Potential Difference
Magnetic Poles
Series Circuit
37. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Resistor
Ohm's Law
Magnetism
Series Circuit
38. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Secondary Winding
Electron
Horsepower
Magnetic Circuit
39. One- thousandth of volt.
Parallel Circuit
Millivolt
Static Electrical Charge
Storage Battery
40. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Positive Plate
Millivolt
Amp Meter
Secondary Winding
41. Opposition to current flow
Resistance
Meter
Parallel Circuit
Natural Magnet
42. 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.
Meter
Magnetic Field
Valance Electron
Current
43. Smallest part a substance can physically divided into composed of 2 or more atoms.
Static Electrical Charge
Magnetic Field
Bimetallic Strip
Molecule
44. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Ampere
Resistance
Ohm's Law
Lines of Force
45. One millionth of an ampere.
Micro Ohm
Micro Ampere
Secondary Winding
Rheostat
46. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Potential Difference
Secondary Cell
Electron
Voltage Drop
47. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Ohmmeter
Volt
Electrode
48. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Secondary Winding
Rheostat
Impedance
49. Iron and certain alloys of iron which are magnetized by artificial means.
Coulomb
Artificial Magnet
Conductor
Voltmeter
50. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Plates
Proton
Series Circuit
Parallel Circuit