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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 material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Parallel Circuit
Magnetic Material
Potential Difference
2. A material with few free electrons. A structure or material used to prevent the passage of current.
Non - Magnetic Material
Insulator
Molecule
Electromagnetic Induction
3. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Atom
Magnetic Circuit
Wattmeter
4. An instrument for measuring electric current
Amp Meter
Micro Ohm
Mega Ohm
Proton
5. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Electro- Motive Force
Alternating Current
Short Circuit
Proton
6. The number of cycles per second. Example: 60 cycles per second alternating current.
Series Circuit
Permeability
Power
Frequency
7. Opposition to current flow
Natural Magnet
Resistance
Electromagnetic Induction
Voltage Drop
8. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Magnetic Circuit
Electrolyte
Watt
Factors governing the Value of EMF of a Generator
9. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Plates
Electric Generator
Ohm
Residual Magnetism
10. One millionth of a volt.
Secondary Winding
Lagging Current
Wattmeter
Micro Volt
11. 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.
Voltmeter
Free Electrons
Electromagnet
Shells
12. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Electrical Circuit
Step- Down Transformer
Kilowatt
Mega Ohm
13. A device used to change the voltage of an alternating current circuit.
Electron
Electromagnet
Transformer
Leading Current
14. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Coulomb
Short Circuit
Magnetic Lines of Force
Series - Parallel Circuit
15. In a battery - the electrode which takes up the electrons returning from the external circuit.
Electron Flow
Micro Ampere
Positive Plate
Electric Generator
16. A complete sequence of events - as an alternating- current cycle.
Cycle
Micro Ohm
Volt
Ohmmeter
17. A unit of power.
Millivolt
Watt
Electromagnetic Induction
Free Electrons
18. 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.
Micro Ohm
Voltage Drop
Condenser
Milliampere
19. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Electron
Atom
Secondary Cell
Proton
20. Several secondary cells connected together for either a greater voltage or current output.
Magnetic Pole
Storage Battery
Alternating Current
Voltmeter
21. 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
Kilowatt
Voltage Drop
Fuse
22. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Kilowatt Hour
Rheostat
Armature
Valance Electron
23. A material which can be magnetized - principally iron.
Impedance
Secondary Winding
Magnetic Material
Resistance
24. Total and complete opposition to the flow of electrons
Resistor
Impedance
Step- Down Transformer
Cycle
25. The center portion of an atom which has a positive electrical charge.
Artificial Magnet
Three -Phase Circuit
Nucleus
Rotor
26. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Proton
Millivolt
Electron Flow
Impedance
27. A circuit with only one path for current to flow. There are no branches.
Resistance
Series Circuit
Electron
Free Electrons
28. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Electric Generator
'Crose Phase'
Residual Magnetism
Kilowatt
29. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Secondary Winding
Atom
Primary Cell
Micro Ohm
30. 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)
Voltage Drop
Voltage Drop
Magnetic Pole
Amp Meter
31. 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.
Circuit
Ohm's Law
Volt
Permeability
32. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Fuse
Voltmeter
Factors Governing Resistance
Magnetic Poles
33. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Nucleus
Factors Governing Resistance
Residual Magnetism
34. 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
Electromagnetic Induction
Storage Battery
Ohmmeter
35. A resistor designed so that its resistance is readily adjusted.
Potential Difference
Rheostat
Series Circuit
Electron
36. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Artificial Magnet
Series - Parallel Circuit
Secondary Cell
Static Electrical Charge
37. The liquid solution (sometime a paste) in which the electrodes are placed.
Static Electrical Charge
Electrolyte
Electromagnetic Induction
Electron
38. Iron and certain alloys of iron which are magnetized by artificial means.
Voltmeter
Kilowatt
Voltage Drop
Artificial Magnet
39. 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.
Cycle
Voltage Drop
Valance Electron
Mega Ohm
40. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Coulomb
Series - Parallel Circuit
Electrolyte
41. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Electrode
Factors Governing Resistance
Series Circuit
Lines of Force
42. One millionth of an ohm.
Series Circuit
Micro Ohm
Bimetallic Strip
Valance Electron
43. The space around a magnet in which the magnetic force is felt.
Bound Electrons
Secondary Winding
Nucleus
Magnetic Field
44. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Proton
Electro- Motive Force
Electron
Factors governing the Value of EMF of a Generator
45. Occurs when a stream of electrons are caused to move through a conductor.
Atom
Current
Resistance
Leading Current
46. A circuit with two or more paths for the current to take.
Positive Plate
Parallel Circuit
Free Electrons
Rheostat
47. The dissimilar metals which are placed in an electrolyte to form a cell.
Short Circuit
Resistor
Electrode
Step-Up Transformer
48. An alternating current which current cycle begins later that its voltage cycle.
Nucleus
Alternator
Lagging Current
Wattmeter
49. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Resistance
Parallel Circuit
Volt
Bound Electrons
50. One- thousandth of a ampere
Volt
Lagging Current
Milliampere
Short Circuit