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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. The dissimilar metals which are placed in an electrolyte to form a cell.
Shells
Electrode
Electron
Magnetic Lines of Force
2. 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.
Electromagnet
Magnetism
Artificial Magnet
Potential Difference
3. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Volt
Shells
Resistor
Step-Up Transformer
4. A rate of movement of electrons through a conductor.
Secondary Cell
Current
Transformer
Primary Cell
5. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Resistor
Bound Electrons
Potential Difference
Nucleus
6. A material that has many free electrons thus allowing electric current to flow through it easily.
Circuit
Millivolt
Frequency
Conductor
7. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Short Circuit
Electric Generator
Milliampere
Step- Down Transformer
8. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Magnetic Field
Parallel Circuit
Electromagnet
Permanent Magnet
9. A unit of power.
Factors governing the Value of EMF of a Generator
Watt
'Crose Phase'
Micro Volt
10. Lines representing the direction of the magnetic force in a magnetic field.
Milliampere
Amp Meter
Magnetic Lines of Force
Series Circuit
11. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Secondary Cell
Static Electrical Charge
Ohm's Law
Magnetic Field
12. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Mega Ohm
Potential Difference
Free Electrons
Residual Magnetism
13. A circuit with two or more paths for the current to take.
Volt
Magnetic Circuit
Parallel Circuit
Potential Difference
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
Electron Flow
Insulator
Lagging Current
15. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Resistance
Micro Ohm
Lines of Force
Frequency
16. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Micro Ohm
Non - Magnetic Material
Ampere
17. Smallest part a substance can physically divided into composed of 2 or more atoms.
Rotor
Positive Plate
Magnetic Material
Molecule
18. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Resistor
Bound Electrons
Series Circuit
Magnetism
19. 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)
Molecule
Ampere
Ohm
Magnetic Pole
20. One millionth of a volt.
Bimetallic Strip
Alternating Current
Micro Volt
Magnetic Field
21. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Wattmeter
Ampere
Proton
Series Circuit
22. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Mega Ohm
Nucleus
Permeability
Circuit
23. An instrument for measuring electric current
Electrical Circuit
Primary Winding
Plates
Amp Meter
24. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electron Flow
Molecule
Rotor
Series Circuit
25. One- thousandth of a ampere
Electron
Residual Magnetism
Milliampere
Shells
26. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Coulomb
Millivolt
Micro Volt
27. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Alternating Current
Millivolt
Plates
Wattmeter
28. Several secondary cells connected together for either a greater voltage or current output.
Electric Generator
Magnetic Field
Current
Storage Battery
29. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Milliampere
Shells
Plates
30. The center portion of an atom which has a positive electrical charge.
Nucleus
Molecule
Residual Magnetism
Magnetic Field
31. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Alternator
Ohm
Alternating Current
Factors governing the Value of EMF of a Generator
32. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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33. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electric Generator
Shells
Static Electrical Charge
Series Circuit
34. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Permeability
Micro Ohm
Condenser
Rheostat
35. A unit of POWER. 1 kilowatt = 1 -000 watts
Insulator
Bimetallic Strip
Ohmmeter
Kilowatt
36. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Micro Ohm
Electrolyte
Micro Ampere
Plates
37. A generator that produces alternating current.
Electro- Motive Force
Resistor
Electrode
Alternator
38. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Atom
Non - Magnetic Material
Watt
Series Circuit
39. One million ohms.
Fuse
Mega Ohm
Kilowatt Hour
Proton
40. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Primary Winding
Mega Ohm
Electron
Horsepower
41. 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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42. 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.
Circuit
Bimetallic Strip
Wattmeter
Bound Electrons
43. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Fuse
Primary Cell
Permeability
Series Circuit
44. 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.
Magnetism
Valance Electron
Electron Flow
Proton
45. 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.
Series Circuit
Bimetallic Strip
Electrical Circuit
Voltage Drop
46. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Three -Phase Circuit
Horsepower
Kilowatt Hour
Secondary Cell
47. In a battery - the electrode which takes up the electrons returning from the external circuit.
Electrical Circuit
Alternator
Resistance
Positive Plate
48. 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
Magnetic Lines of Force
Plates
Series Circuit
49. A circuit in which there is resistance (load) connected both in series and parallel.
Artificial Magnet
Series - Parallel Circuit
Electro- Motive Force
Kilowatt
50. One millionth of an ohm.
Millivolt
Natural Magnet
Micro Ohm
Primary Cell