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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 circuit with more than one path. Current branches to flow in every available path.
Parallel Circuit
Voltage Drop
Proton
Electrode
2. A complete sequence of events - as an alternating- current cycle.
Non - Magnetic Material
Static Electrical Charge
Fuse
Cycle
3. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Kilowatt Hour
Millivolt
Three -Phase Circuit
Rotor
4. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Electron
Lines of Force
Resistor
Voltage Drop
5. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Kilowatt
Ampere
Short Circuit
Amp Meter
6. One- thousandth of a ampere
Alternator
Leading Current
Ohm
Milliampere
7. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Molecule
Primary Cell
Electromagnet
Fuse
8. 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.
9. Total and complete opposition to the flow of electrons
Horsepower
Ohm's Law
Impedance
Natural Magnet
10. A material which can be magnetized - principally iron.
Magnetic Material
Parallel Circuit
Micro Ampere
Magnetic Lines of Force
11. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
'Crose Phase'
Ohm
Condenser
Electron
12. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Electron Flow
Permeability
Free Electrons
13. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Rotor
Impedance
Frequency
Electron
14. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Frequency
Armature
Natural Magnet
15. The number of cycles per second. Example: 60 cycles per second alternating current.
Electromagnet
Series Circuit
Non - Magnetic Material
Frequency
16. One million ohms.
Current
Plates
Mega Ohm
Series Circuit
17. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Shells
Atom
Rotor
Proton
18. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Lines of Force
Natural Magnet
Artificial Magnet
Leading Current
19. A device used to change the voltage of an alternating current circuit.
Lines of Force
Transformer
Conductor
Three -Phase Circuit
20. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Current
Parallel Circuit
Electrolyte
Plates
21. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Series Circuit
Armature
Electrical Circuit
22. Negative charge of electricity
Electromagnet
Parallel Circuit
Rotor
Electron
23. In a battery - the electrode which takes up the electrons returning from the external circuit.
Free Electrons
Positive Plate
Impedance
Horsepower
24. Shows relationship between Current - Voltage - Wattage and Resistance.
25. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrical Circuit
Step- Down Transformer
Electrolyte
Electron
26. One millionth of a volt.
Factors Governing Resistance
Alternator
Step- Down Transformer
Micro Volt
27. A material that has many free electrons thus allowing electric current to flow through it easily.
Conductor
Horsepower
Power
Positive Plate
28. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Coulomb
Plates
Cycle
Volt
29. A circuit with only one path for current to flow. There are no branches.
Voltage Drop
Ampere
Ohm
Series Circuit
30. The space around a magnet in which the magnetic force is felt.
Permanent Magnet
Alternator
Magnetic Field
Voltmeter
31. 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.
Molecule
Factors Governing Resistance
Meter
Bimetallic Strip
32. The property of a material that opposes the flow of current.
Ohm's Law
Alternator
Ohm
Resistance
33. Occurs when a stream of electrons are caused to move through a conductor.
Current
Ohm's Law
Milliampere
Step-Up Transformer
34. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Amp Meter
Series Circuit
Electron Flow
Permanent Magnet
35. 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.
Magnetic Field
Electromagnetic Induction
Resistor
Valance Electron
36. An alternating current which current cycle begins later that its voltage cycle.
Permanent Magnet
Artificial Magnet
Primary Winding
Lagging Current
37. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Resistance
Permanent Magnet
'Crose Phase'
Electrode
38. 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.
Leading Current
Power
Series Circuit
Electromagnetic Induction
39. 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
Electromagnetic Induction
Storage Battery
Parallel Circuit
40. One millionth of an ampere.
Micro Ampere
Electrolyte
Step- Down Transformer
Molecule
41. A measuring device.
Electromagnet
Electron
Condenser
Meter
42. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Kilowatt
Ohm's Law
Ohm
Meter
43. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Magnetic Lines of Force
Static Electrical Charge
Potential Difference
Magnetic Circuit
44. The center portion of an atom which has a positive electrical charge.
Coulomb
Current
Nucleus
Amp Meter
45. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Electrical Circuit
Primary Cell
Voltage Drop
Series Circuit
46. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Factors governing the Value of EMF of a Generator
Parallel Circuit
Magnetism
Potential Difference
47. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Series - Parallel Circuit
Voltage Drop
Ohm's Law
Mega Ohm
48. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
'Crose Phase'
Ampere
Secondary Cell
Rotor
49. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Current
Residual Magnetism
Micro Ohm
50. Positive charge of electricity. Located in the nucleus of the atom.
Parallel Circuit
Condenser
Proton
Coulomb