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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 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
Factors Governing Resistance
Non - Magnetic Material
Ohmmeter
2. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Volt
Factors Governing Resistance
Static Electrical Charge
Electro- Motive Force
3. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Permanent Magnet
'Crose Phase'
Natural Magnet
Secondary Winding
4. A material with few free electrons. A structure or material used to prevent the passage of current.
Coulomb
Micro Volt
Resistance
Insulator
5. 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)
Electrolyte
Magnetic Pole
Electron
Three -Phase Circuit
6. An instrument for measuring electric current
Amp Meter
Mega Ohm
Potential Difference
Resistance
7. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Micro Ohm
Ampere
Lines of Force
Alternator
8. A unit of POWER. 1 kilowatt = 1 -000 watts
Non - Magnetic Material
Nucleus
Kilowatt
Volt
9. Meter used to measure resistance in an electrical circuit.
Electric Generator
Voltmeter
Ohmmeter
Condenser
10. 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.
Fuse
Power
Short Circuit
Electromagnetic Induction
11. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Mega Ohm
Magnetic Field
Primary Winding
12. One millionth of an ampere.
Atom
Molecule
Micro Ampere
Impedance
13. An alternating current which current cycle begins earlier than its voltage cycle.
Valance Electron
Transformer
Molecule
Leading Current
14. One million ohms.
Magnetism
Short Circuit
Resistor
Mega Ohm
15. Total and complete opposition to the flow of electrons
Conductor
Nucleus
Impedance
Ohm's Law
16. An alternating current which current cycle begins later that its voltage cycle.
Millivolt
Alternating Current
Parallel Circuit
Lagging Current
17. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Electron
'Crose Phase'
Voltmeter
Power
18. The dissimilar metals which are placed in an electrolyte to form a cell.
Parallel Circuit
Magnetic Circuit
Electrode
Electron Flow
19. Shows relationship between Current - Voltage - Wattage and Resistance.
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20. A device used to change the voltage of an alternating current circuit.
Transformer
Impedance
Volt
Step-Up Transformer
21. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Voltmeter
Fuse
Step- Down Transformer
22. Positive charge of electricity. Located in the nucleus of the atom.
Electron Flow
Atom
Proton
Millivolt
23. 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
Secondary Cell
Magnetic Poles
Bimetallic Strip
24. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Parallel Circuit
Kilowatt Hour
Electrode
Current
25. A generator that produces alternating current.
Watt
Alternator
Conductor
Current
26. Occurs when a stream of electrons are caused to move through a conductor.
Current
Milliampere
Mega Ohm
Bimetallic Strip
27. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Magnetic Material
Kilowatt
Free Electrons
Lagging Current
28. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electromagnet
Horsepower
Millivolt
Electric Generator
29. 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.
Secondary Cell
Potential Difference
Parallel Circuit
Resistance
30. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Magnetic Poles
Atom
Non - Magnetic Material
Factors Governing Resistance
31. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetic Circuit
Free Electrons
Magnetism
Parallel Circuit
32. Several secondary cells connected together for either a greater voltage or current output.
Nucleus
Magnetic Field
Molecule
Storage Battery
33. A circuit with only one path for current to flow. There are no branches.
Ohm's Law
Series Circuit
Series - Parallel Circuit
Condenser
34. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Electromagnet
Residual Magnetism
Non - Magnetic Material
35. A rate of movement of electrons through a conductor.
Voltage Drop
Current
Milliampere
Storage Battery
36. Lines representing the direction of the magnetic force in a magnetic field.
Mega Ohm
Artificial Magnet
Residual Magnetism
Magnetic Lines of Force
37. Opposition to current flow
Coulomb
Factors governing the Value of EMF of a Generator
Secondary Winding
Resistance
38. A material which can be magnetized - principally iron.
Magnetic Poles
Magnetic Material
Current
Coulomb
39. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Armature
Lagging Current
Coulomb
Factors governing the Value of EMF of a Generator
40. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Secondary Cell
Alternating Current
Electromagnet
Voltmeter
41. Smallest part a substance can physically divided into composed of 2 or more atoms.
Resistor
Series - Parallel Circuit
Molecule
Lagging Current
42. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Electron Flow
Artificial Magnet
Ohm's Law
Insulator
43. The property of a material that opposes the flow of current.
Permanent Magnet
Resistance
Primary Cell
Bimetallic Strip
44. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Primary Cell
Step- Down Transformer
Impedance
Secondary Cell
45. A measuring device.
Meter
Free Electrons
Insulator
Residual Magnetism
46. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Parallel Circuit
Meter
Insulator
Armature
47. Coil connected to the source of power on a transformer.
'Crose Phase'
Conductor
Millivolt
Primary Winding
48. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Residual Magnetism
Three -Phase Circuit
Non - Magnetic Material
Circuit
49. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Magnetic Material
Bound Electrons
Series Circuit
Permeability
50. The center portion of an atom which has a positive electrical charge.
Current
Nucleus
Resistance
Mega Ohm