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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. Lines representing the direction of the magnetic force in a magnetic field.
Electron Flow
'Crose Phase'
Magnetic Lines of Force
Plates
2. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Leading Current
Shells
Milliampere
Fuse
3. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Residual Magnetism
Proton
Storage Battery
Magnetism
4. Negative charge of electricity
Electromagnet
Parallel Circuit
Step-Up Transformer
Electron
5. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Voltmeter
Voltage Drop
Kilowatt Hour
6. A complete sequence of events - as an alternating- current cycle.
Cycle
Secondary Winding
Step-Up Transformer
Ohm's Law
7. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Permanent Magnet
Magnetic Field
Primary Cell
Wattmeter
8. A unit of power.
Watt
Ohmmeter
Secondary Winding
Rotor
9. Total and complete opposition to the flow of electrons
Valance Electron
Leading Current
Impedance
Magnetic Field
10. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Armature
Free Electrons
Secondary Winding
Wattmeter
11. Positive charge of electricity. Located in the nucleus of the atom.
'Crose Phase'
Micro Volt
Proton
Leading Current
12. The unit of Electro- Motive Force
Factors Governing Resistance
Volt
'Crose Phase'
Electron
13. 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
Voltmeter
Electrolyte
Ampere
14. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Armature
Coulomb
Electrode
Permanent Magnet
15. 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.
Atom
Magnetism
Potential Difference
Parallel Circuit
16. A measuring device.
Electromagnetic Induction
Storage Battery
Meter
Primary Cell
17. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Positive Plate
Factors Governing Resistance
Residual Magnetism
Proton
18. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Resistance
Magnetic Field
Short Circuit
Armature
19. Occurs when a stream of electrons are caused to move through a conductor.
Bound Electrons
Ohm's Law
Current
Secondary Cell
20. A circuit in which there is resistance (load) connected both in series and parallel.
Electric Generator
Series - Parallel Circuit
Milliampere
Cycle
21. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Insulator
Electromagnetic Induction
Primary Winding
Step- Down Transformer
22. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Watt
Electron Flow
Magnetic Pole
Magnetic Circuit
23. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Meter
Ampere
Cycle
Electron Flow
24. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Plates
Ohm
Series Circuit
Lagging Current
25. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Parallel Circuit
Ampere
Electrode
Step-Up Transformer
26. Opposition to current flow
Resistance
Electrolyte
Step-Up Transformer
Magnetic Pole
27. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Parallel Circuit
Meter
Kilowatt Hour
Alternator
28. The rotating member of an electrical machine.
Primary Cell
Secondary Cell
Rotor
Coulomb
29. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Primary Cell
Electromagnetic Induction
Cycle
Coulomb
30. 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.
Mega Ohm
Milliampere
Non - Magnetic Material
Circuit
31. In a battery - the electrode which takes up the electrons returning from the external circuit.
Ampere
Primary Winding
Positive Plate
Potential Difference
32. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electric Generator
Coulomb
Armature
Transformer
33. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Conductor
Frequency
Electron
Step-Up Transformer
34. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Magnetic Field
Factors governing the Value of EMF of a Generator
Factors Governing Resistance
35. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Lines of Force
Permanent Magnet
Molecule
Series Circuit
36. 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.
Proton
Permanent Magnet
Volt
Secondary Winding
37. 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
Magnetic Circuit
Alternating Current
Wattmeter
38. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Molecule
Non - Magnetic Material
Resistor
39. The property of a material that opposes the flow of current.
Resistance
Conductor
Kilowatt Hour
Millivolt
40. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Ohm
Nucleus
Cycle
41. Several secondary cells connected together for either a greater voltage or current output.
Parallel Circuit
Proton
Amp Meter
Storage Battery
42. The liquid solution (sometime a paste) in which the electrodes are placed.
Armature
Milliampere
Electrolyte
Mega Ohm
43. 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.
Valance Electron
Amp Meter
Horsepower
Electromagnet
44. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
45. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Electromagnet
Resistance
Potential Difference
Magnetic Poles
46. Shows relationship between Current - Voltage - Wattage and Resistance.
47. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Watt
Alternating Current
Conductor
48. One millionth of a volt.
Natural Magnet
Micro Volt
Resistance
Lines of Force
49. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Electron Flow
Bound Electrons
Kilowatt
50. The number of cycles per second. Example: 60 cycles per second alternating current.
Electron
Frequency
Magnetic Pole
Permanent Magnet