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Test your basic knowledge |
Basic Electricity Vocab
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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 property of a material that opposes the flow of current.
Meter
Resistance
Armature
Electron
2. A device used to change the voltage of an alternating current circuit.
Ohm
Series - Parallel Circuit
Atom
Transformer
3. One million ohms.
Series Circuit
Mega Ohm
Magnetic Material
Kilowatt Hour
4. 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.
Fuse
Amp Meter
Shells
Valance Electron
5. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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6. 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
Resistance
Proton
Step- Down Transformer
Electrical Circuit
7. 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.
Magnetic Poles
Resistance
Volt
Power
8. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Transformer
Impedance
Fuse
Natural Magnet
9. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Artificial Magnet
Residual Magnetism
Plates
Rotor
10. Occurs when a stream of electrons are caused to move through a conductor.
Current
Kilowatt
Meter
Voltmeter
11. Coil connected to the source of power on a transformer.
Primary Winding
Potential Difference
Bimetallic Strip
Alternating Current
12. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Armature
Horsepower
Micro Volt
Voltage Drop
13. An instrument for measuring electric current
Plates
Primary Winding
Amp Meter
Permeability
14. The unit of Electro- Motive Force
Rotor
Magnetic Material
Ohm's Law
Volt
15. A material which can be magnetized - principally iron.
Magnetism
Current
Magnetic Material
Ampere
16. 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.
Artificial Magnet
Molecule
Series Circuit
Condenser
17. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Short Circuit
Permanent Magnet
Electro- Motive Force
Electromagnet
18. A unit of POWER. 1 kilowatt = 1 -000 watts
Natural Magnet
Kilowatt
Magnetic Field
Micro Ampere
19. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
'Crose Phase'
Bimetallic Strip
Resistor
Magnetic Circuit
20. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.
Atom
Electric Generator
Potential Difference
Bimetallic Strip
21. A circuit with more than one path. Current branches to flow in every available path.
Ohm's Law
Shells
Parallel Circuit
Alternator
22. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Current
Magnetic Lines of Force
Parallel Circuit
Resistor
23. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Circuit
Nucleus
Electro- Motive Force
Lines of Force
24. A generator that produces alternating current.
Alternator
Electrolyte
Electron Flow
Ohm's Law
25. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Non - Magnetic Material
Electron
Electromagnet
Molecule
26. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Molecule
Factors governing the Value of EMF of a Generator
Series Circuit
Circuit
27. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Coulomb
Mega Ohm
Condenser
Alternator
28. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Magnetic Poles
Kilowatt
Conductor
Milliampere
29. An alternating current which current cycle begins later that its voltage cycle.
Permanent Magnet
Lagging Current
Positive Plate
Shells
30. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Armature
Static Electrical Charge
Natural Magnet
Ohm
31. The liquid solution (sometime a paste) in which the electrodes are placed.
Electromagnet
Electrolyte
Electric Generator
Electromagnetic Induction
32. Single POSITIVE electrical charge - located in the middle of an atom.
Proton
Short Circuit
Magnetic Pole
Natural Magnet
33. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Coulomb
Circuit
Electrolyte
Alternating Current
34. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Voltage Drop
Three -Phase Circuit
Electron Flow
Shells
35. One millionth of an ohm.
Amp Meter
Electromagnet
Micro Ohm
Mega Ohm
36. Meter used to measure resistance in an electrical circuit.
Static Electrical Charge
Ohmmeter
Positive Plate
Rheostat
37. An alternating current which current cycle begins earlier than its voltage cycle.
Volt
Leading Current
Rheostat
Potential Difference
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.
Rotor
Electromagnetic Induction
Valance Electron
Series Circuit
39. A material that has many free electrons thus allowing electric current to flow through it easily.
Magnetic Material
Volt
Conductor
Micro Volt
40. Several secondary cells connected together for either a greater voltage or current output.
Storage Battery
Circuit
Wattmeter
Watt
41. Shows relationship between Current - Voltage - Wattage and Resistance.
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42. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Resistance
Rheostat
Ampere
Wattmeter
43. The number of cycles per second. Example: 60 cycles per second alternating current.
Amp Meter
Frequency
Secondary Winding
Transformer
44. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Permanent Magnet
Electron Flow
Magnetic Material
Circuit
45. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Secondary Cell
Wattmeter
Series - Parallel Circuit
Leading Current
46. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Magnetic Field
Proton
Micro Ohm
47. In a battery - the electrode which takes up the electrons returning from the external circuit.
Micro Ohm
Positive Plate
Leading Current
Electron
48. A measuring device.
Leading Current
Voltage Drop
Current
Meter
49. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Amp Meter
Factors Governing Resistance
Primary Winding
Electron
50. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Factors governing the Value of EMF of a Generator
Free Electrons
Magnetic Poles