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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. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electron
Short Circuit
Series Circuit
Electrode
2. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Atom
Factors governing the Value of EMF of a Generator
Secondary Cell
3. In a battery - the electrode which takes up the electrons returning from the external circuit.
Electro- Motive Force
Atom
Electron
Positive Plate
4. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Magnetic Lines of Force
Electric Generator
Permanent Magnet
Nucleus
5. A generator that produces alternating current.
Alternator
Voltage Drop
Watt
Three -Phase Circuit
6. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.
Circuit
Electron Flow
Secondary Cell
Artificial Magnet
7. A rate of movement of electrons through a conductor.
Shells
Current
Plates
Rheostat
8. 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.
Natural Magnet
Fuse
Series Circuit
Factors Governing Resistance
9. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Electrical Circuit
Coulomb
Electro- Motive Force
Three -Phase Circuit
10. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Ohm's Law
Electrical Circuit
Magnetic Circuit
Magnetic Material
11. A material with few free electrons. A structure or material used to prevent the passage of current.
Amp Meter
Insulator
Residual Magnetism
Cycle
12. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Resistor
Free Electrons
Permanent Magnet
Electrolyte
13. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Armature
Non - Magnetic Material
Primary Cell
Bound Electrons
14. 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
Natural Magnet
Magnetic Material
Lines of Force
15. Total and complete opposition to the flow of electrons
Micro Volt
Magnetic Material
Fuse
Impedance
16. One millionth of an ohm.
Micro Ohm
Natural Magnet
Magnetism
Resistor
17. 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.
Secondary Winding
Valance Electron
Fuse
Electrical Circuit
18. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Magnetism
Electric Generator
Nucleus
Potential Difference
19. Shows relationship between Current - Voltage - Wattage and Resistance.
20. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Meter
Impedance
Micro Volt
Step-Up Transformer
21. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
'Crose Phase'
Lagging Current
Current
Coulomb
22. The property of a material that opposes the flow of current.
Ohm's Law
Three -Phase Circuit
Micro Ohm
Resistance
23. Coil connected to the source of power on a transformer.
Three -Phase Circuit
Primary Winding
Alternating Current
Electric Generator
24. Iron and certain alloys of iron which are magnetized by artificial means.
Meter
Magnetic Poles
Artificial Magnet
Three -Phase Circuit
25. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Wattmeter
Alternating Current
Resistance
Voltage Drop
26. 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)
Permanent Magnet
Magnetic Pole
Ampere
Meter
27. Lines representing the direction of the magnetic force in a magnetic field.
Potential Difference
Electron Flow
Alternating Current
Magnetic Lines of Force
28. Single POSITIVE electrical charge - located in the middle of an atom.
Rotor
Electrical Circuit
Proton
Frequency
29. Smallest part a substance can physically divided into composed of 2 or more atoms.
Factors governing the Value of EMF of a Generator
Electrolyte
Micro Ampere
Molecule
30. Several secondary cells connected together for either a greater voltage or current output.
Valance Electron
Resistor
Storage Battery
Electric Generator
31. An alternating current which current cycle begins later that its voltage cycle.
Resistance
Plates
Magnetic Material
Lagging Current
32. One millionth of an ampere.
Electromagnetic Induction
Micro Ampere
Storage Battery
Three -Phase Circuit
33. 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.
Alternating Current
Residual Magnetism
Valance Electron
Bimetallic Strip
34. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Permeability
Current
Series Circuit
Electron Flow
35. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Alternating Current
Electron
Non - Magnetic Material
Parallel Circuit
36. 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
Alternating Current
Magnetic Circuit
Electrical Circuit
Natural Magnet
37. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Meter
Wattmeter
Alternating Current
Permanent Magnet
38. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Magnetic Circuit
Conductor
Voltage Drop
Ohm
39. The space around a magnet in which the magnetic force is felt.
Secondary Cell
Magnetic Field
Bound Electrons
Static Electrical Charge
40. Occurs when a stream of electrons are caused to move through a conductor.
Insulator
Meter
Current
Proton
41. Meter used to measure resistance in an electrical circuit.
Condenser
Resistance
Nucleus
Ohmmeter
42. Term applied to the loss of voltage in forcing current through any portion of a circuit. Different factors will cause a drop; material - size - (cross - sectional area) length - temperature.
Rheostat
Bimetallic Strip
Voltage Drop
Permeability
43. The dissimilar metals which are placed in an electrolyte to form a cell.
Kilowatt
Three -Phase Circuit
Watt
Electrode
44. Opposition to current flow
Armature
Step- Down Transformer
Magnetic Material
Resistance
45. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Alternating Current
Electric Generator
Voltmeter
Leading Current
46. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Electron
Step- Down Transformer
Condenser
Resistance
47. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Wattmeter
Short Circuit
Free Electrons
48. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Primary Cell
Free Electrons
Secondary Winding
Volt
49. The area surrounding a magnet in which magnetic properties are exhibited
Proton
Short Circuit
Millivolt
Magnetic Field
50. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Shells
Micro Ohm
Wattmeter
Non - Magnetic Material