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Test your basic knowledge |
Basic Electricity Vocab
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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. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Watt
Resistance
Shells
Electron
2. A unit of power.
Watt
Milliampere
Atom
Electrical Circuit
3. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Rotor
Amp Meter
Factors governing the Value of EMF of a Generator
Voltage Drop
4. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Cycle
Current
Secondary Cell
Wattmeter
5. Several secondary cells connected together for either a greater voltage or current output.
Proton
Atom
Volt
Storage Battery
6. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electric Generator
Electron
Current
Parallel Circuit
7. 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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8. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Kilowatt Hour
Micro Ohm
Step- Down Transformer
Ohmmeter
9. A resistor designed so that its resistance is readily adjusted.
Rheostat
Factors governing the Value of EMF of a Generator
Wattmeter
Micro Ohm
10. 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.
Voltage Drop
Lagging Current
Horsepower
Series Circuit
11. The liquid solution (sometime a paste) in which the electrodes are placed.
Ohm
Volt
Electrolyte
Lines of Force
12. A circuit with only one path for current to flow. There are no branches.
Series Circuit
Volt
Electromagnet
Resistance
13. The rotating member of an electrical machine.
Ampere
Rotor
Proton
Impedance
14. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Short Circuit
Plates
Bound Electrons
Shells
15. A generator that produces alternating current.
Amp Meter
Alternator
Electrolyte
Lines of Force
16. A rate of movement of electrons through a conductor.
Atom
Current
Ampere
Magnetic Field
17. One millionth of a volt.
Circuit
Magnetic Pole
Micro Volt
Series - Parallel Circuit
18. The dissimilar metals which are placed in an electrolyte to form a cell.
Electrode
Volt
Static Electrical Charge
Bimetallic Strip
19. 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.
Lagging Current
Bimetallic Strip
Non - Magnetic Material
Current
20. One- thousandth of a ampere
Resistor
Milliampere
Bound Electrons
Primary Cell
21. A measuring device.
Resistance
Electron
Magnetic Lines of Force
Meter
22. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Ampere
Resistor
Micro Ampere
Alternating Current
23. One millionth of an ohm.
Voltmeter
Secondary Winding
Micro Ohm
Rotor
24. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Rotor
Residual Magnetism
Volt
25. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Resistance
Step- Down Transformer
Secondary Cell
Free Electrons
26. Single POSITIVE electrical charge - located in the middle of an atom.
Proton
Horsepower
Valance Electron
Micro Ampere
27. A coil of wire designed to act as a magnet as a result of carrying an electrical current. It is usually wound on a soft iron core.
Conductor
Plates
Electromagnet
Factors Governing Resistance
28. A unit of POWER. 1 kilowatt = 1 -000 watts
Series Circuit
Electromagnet
Primary Cell
Kilowatt
29. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Micro Ohm
Electromagnetic Induction
Condenser
Horsepower
30. Positive charge of electricity. Located in the nucleus of the atom.
Secondary Cell
Coulomb
Series Circuit
Proton
31. The area surrounding a magnet in which magnetic properties are exhibited
Leading Current
Magnetic Circuit
Ohm's Law
Magnetic Field
32. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Electron Flow
Permanent Magnet
Electron
Lines of Force
33. 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.
Circuit
Volt
Residual Magnetism
Voltage Drop
34. One millionth of an ampere.
Voltage Drop
Series Circuit
Micro Ampere
Magnetic Lines of Force
35. An instrument for measuring electric current
Valance Electron
Magnetic Lines of Force
Amp Meter
Natural Magnet
36. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Ohm
Free Electrons
Voltage Drop
Alternator
37. The space around a magnet in which the magnetic force is felt.
Electrical Circuit
Residual Magnetism
Magnetic Field
Current
38. A device used to change the voltage of an alternating current circuit.
Static Electrical Charge
Secondary Cell
Primary Winding
Transformer
39. An alternating current which current cycle begins earlier than its voltage cycle.
Current
Leading Current
Electro- Motive Force
Circuit
40. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Rotor
Atom
Impedance
Permeability
41. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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42. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Electrolyte
Static Electrical Charge
Secondary Winding
Three -Phase Circuit
43. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Ohm
Shells
Magnetic Field
Voltmeter
44. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Proton
Armature
Storage Battery
Positive Plate
45. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Electrical Circuit
Magnetic Field
Permeability
Kilowatt
46. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Permanent Magnet
Alternating Current
Condenser
Factors governing the Value of EMF of a Generator
47. One- thousandth of volt.
Transformer
Millivolt
Horsepower
Magnetic Lines of Force
48. A material which can be magnetized - principally iron.
Magnetic Material
Magnetic Circuit
Three -Phase Circuit
Resistance
49. Iron and certain alloys of iron which are magnetized by artificial means.
Artificial Magnet
Voltage Drop
Natural Magnet
Permanent Magnet
50. The unit of Electro- Motive Force
Static Electrical Charge
Volt
Series Circuit
Atom