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Test your basic knowledge |
Basic Electricity Vocab
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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. Opposition to current flow
Alternating Current
Resistance
Shells
Magnetic Material
2. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Ohm
Cycle
Magnetism
Condenser
3. One million ohms.
Series Circuit
Mega Ohm
Electromagnet
Proton
4. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Factors governing the Value of EMF of a Generator
Lagging Current
Circuit
Voltage Drop
5. 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.
Natural Magnet
Valance Electron
Bimetallic Strip
Micro Volt
6. A circuit with only one path for current to flow. There are no branches.
Residual Magnetism
Magnetic Material
Ohm's Law
Series Circuit
7. 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)
Magnetic Pole
Atom
Transformer
Resistance
8. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Parallel Circuit
Factors Governing Resistance
Coulomb
Secondary Winding
9. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Magnetic Lines of Force
Leading Current
Alternator
Voltage Drop
10. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Free Electrons
Watt
Short Circuit
Bound Electrons
11. Single POSITIVE electrical charge - located in the middle of an atom.
Current
Rheostat
Proton
Permeability
12. The rotating member of an electrical machine.
Rotor
Step- Down Transformer
Volt
Volt
13. One- thousandth of volt.
Milliampere
Millivolt
Resistance
Transformer
14. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Shells
Ohm
Leading Current
Voltmeter
15. 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.
Electromagnetic Induction
Electrode
Mega Ohm
Series Circuit
16. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Armature
Ohm
Lagging Current
Magnetic Field
17. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Parallel Circuit
Residual Magnetism
Resistor
Leading Current
18. A material which can be magnetized - principally iron.
Millivolt
Kilowatt
Magnetic Material
Mega Ohm
19. The dissimilar metals which are placed in an electrolyte to form a cell.
Nucleus
Electrode
Static Electrical Charge
Resistor
20. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Storage Battery
Alternating Current
Bound Electrons
21. Occurs when a stream of electrons are caused to move through a conductor.
Ohm
Current
Electron Flow
Natural Magnet
22. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Power
Horsepower
Kilowatt Hour
Current
23. Negative charge of electricity
Electron
Positive Plate
Magnetism
Permanent Magnet
24. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Watt
Natural Magnet
Ohm's Law
Non - Magnetic Material
25. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Mega Ohm
Electron
Leading Current
Electro- Motive Force
26. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Parallel Circuit
Plates
Positive Plate
Natural Magnet
27. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Insulator
Step-Up Transformer
Static Electrical Charge
Short Circuit
28. 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
Electron
Impedance
Electrical Circuit
Series - Parallel Circuit
29. 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.
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30. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Rheostat
Step- Down Transformer
Frequency
Kilowatt
31. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Power
Mega Ohm
Magnetic Poles
Rheostat
32. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Electro- Motive Force
Mega Ohm
Electrolyte
33. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Proton
Factors Governing Resistance
Mega Ohm
Fuse
34. One millionth of a volt.
Insulator
Permanent Magnet
Micro Volt
Rheostat
35. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Positive Plate
Kilowatt Hour
Artificial Magnet
Plates
36. An alternating current which current cycle begins later that its voltage cycle.
Factors Governing Resistance
Positive Plate
Valance Electron
Lagging Current
37. The number of cycles per second. Example: 60 cycles per second alternating current.
Magnetism
Frequency
Step-Up Transformer
Non - Magnetic Material
38. Coil connected to the source of power on a transformer.
Cycle
Kilowatt Hour
Potential Difference
Primary Winding
39. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Rotor
Factors governing the Value of EMF of a Generator
Static Electrical Charge
Ohm's Law
40. One millionth of an ohm.
Storage Battery
Micro Ohm
Natural Magnet
Voltage Drop
41. 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.
Volt
Artificial Magnet
Shells
Free Electrons
42. 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
Electro- Motive Force
Positive Plate
Resistance
43. A circuit with more than one path. Current branches to flow in every available path.
Non - Magnetic Material
Resistor
Magnetism
Parallel Circuit
44. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Circuit
Ohm's Law
Bound Electrons
Electron Flow
45. The difference between the electrical condition of one point in an electric circuit and that of another point which tends to cause current to flow between two points. Measured in volts.
Voltmeter
Potential Difference
Lines of Force
Primary Winding
46. An instrument for measuring electric current
Current
Kilowatt
Rotor
Amp Meter
47. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Magnetic Field
Electro- Motive Force
Bound Electrons
Secondary Winding
48. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Watt
Ohm
Electron
Alternating Current
49. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Alternating Current
Voltmeter
Rheostat
50. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Ohm's Law
Factors Governing Resistance
Current
Magnetism