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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. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Wattmeter
Rheostat
Series Circuit
Amp Meter
2. The center portion of an atom which has a positive electrical charge.
Nucleus
Kilowatt
Magnetic Poles
Step-Up Transformer
3. A generator that produces alternating current.
Electric Generator
Alternator
Power
Ohm
4. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Magnetic Poles
Primary Cell
Fuse
Valance Electron
5. Iron and certain alloys of iron which are magnetized by artificial means.
Micro Ohm
Artificial Magnet
Three -Phase Circuit
Plates
6. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electron
Electric Generator
Ampere
Natural Magnet
7. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Volt
Resistance
Circuit
Magnetism
8. A material that has many free electrons thus allowing electric current to flow through it easily.
Circuit
Insulator
Conductor
Frequency
9. Meter used to measure resistance in an electrical circuit.
Ohmmeter
Non - Magnetic Material
Ohm's Law
Proton
10. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Natural Magnet
Free Electrons
Magnetic Field
Static Electrical Charge
11. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Electromagnetic Induction
Proton
Rheostat
Static Electrical Charge
12. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Nucleus
Armature
Horsepower
Voltage Drop
13. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Magnetic Circuit
Parallel Circuit
Permeability
Milliampere
14. The space around a magnet in which the magnetic force is felt.
Primary Winding
Primary Cell
Magnetic Field
Artificial Magnet
15. Several secondary cells connected together for either a greater voltage or current output.
Storage Battery
Transformer
Residual Magnetism
Insulator
16. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Parallel Circuit
Magnetic Field
Condenser
Permeability
17. The property of a material that opposes the flow of current.
Micro Volt
Resistance
Resistor
Shells
18. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Magnetic Pole
Parallel Circuit
Volt
19. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Magnetic Circuit
Molecule
'Crose Phase'
Permanent Magnet
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.
Micro Volt
Alternator
Mega Ohm
Bimetallic Strip
21. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Plates
Series Circuit
Electric Generator
Magnetic Pole
22. A resistor designed so that its resistance is readily adjusted.
Lines of Force
Volt
Rheostat
Millivolt
23. One millionth of an ohm.
Series Circuit
Factors Governing Resistance
Micro Ohm
Electrical Circuit
24. A circuit with more than one path. Current branches to flow in every available path.
Secondary Winding
Parallel Circuit
Magnetic Field
Resistance
25. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Shells
Coulomb
Electrode
Parallel Circuit
26. Single POSITIVE electrical charge - located in the middle of an atom.
Magnetic Field
Fuse
Molecule
Proton
27. A device used to change the voltage of an alternating current circuit.
Electric Generator
Wattmeter
Resistor
Transformer
28. Negative charge of electricity
Micro Ohm
Electron
Permanent Magnet
Magnetic Poles
29. A complete sequence of events - as an alternating- current cycle.
Magnetic Lines of Force
Cycle
Secondary Cell
Armature
30. The liquid solution (sometime a paste) in which the electrodes are placed.
Series Circuit
Milliampere
Wattmeter
Electrolyte
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.
Residual Magnetism
Alternating Current
Power
Free Electrons
32. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Armature
Voltage Drop
Magnetic Circuit
Kilowatt Hour
33. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Primary Cell
Horsepower
Electron Flow
Alternator
34. The number of cycles per second. Example: 60 cycles per second alternating current.
Conductor
Frequency
Kilowatt Hour
Short Circuit
35. One- thousandth of a ampere
Positive Plate
Milliampere
Electron
Kilowatt
36. Coil connected to the source of power on a transformer.
Series Circuit
Fuse
Electrode
Primary Winding
37. Opposition to current flow
Resistance
Millivolt
Voltmeter
Magnetism
38. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Rotor
Ampere
Lines of Force
Proton
39. Positive charge of electricity. Located in the nucleus of the atom.
Step- Down Transformer
Proton
Free Electrons
Cycle
40. Shows relationship between Current - Voltage - Wattage and Resistance.
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41. A measuring device.
Circuit
Meter
Electron Flow
Cycle
42. 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.
Primary Winding
Mega Ohm
Series Circuit
Short Circuit
43. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Step-Up Transformer
Current
Frequency
Ampere
44. 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.
Step-Up Transformer
Power
Parallel Circuit
Primary Winding
45. One million ohms.
Bimetallic Strip
Mega Ohm
Three -Phase Circuit
Kilowatt Hour
46. Smallest part a substance can physically divided into composed of 2 or more atoms.
Resistance
Frequency
Micro Ampere
Molecule
47. A circuit with only one path for current to flow. There are no branches.
Series Circuit
Primary Cell
Bimetallic Strip
Transformer
48. An instrument for measuring electric current
Transformer
Micro Volt
Micro Ampere
Amp Meter
49. A material with few free electrons. A structure or material used to prevent the passage of current.
Step- Down Transformer
Insulator
Storage Battery
Electromagnetic Induction
50. One- thousandth of volt.
Electromagnet
Potential Difference
Residual Magnetism
Millivolt