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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. The space around a magnet in which the magnetic force is felt.
Magnetic Field
'Crose Phase'
Electron
Micro Ampere
2. A complete sequence of events - as an alternating- current cycle.
Resistor
Voltage Drop
Three -Phase Circuit
Cycle
3. 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.
Conductor
Potential Difference
Short Circuit
Voltage Drop
4. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Horsepower
Magnetic Field
Electron Flow
Voltage Drop
5. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Coulomb
Short Circuit
Atom
Impedance
6. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electro- Motive Force
Transformer
Electron
Voltmeter
7. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Cycle
Magnetism
Ampere
8. Several secondary cells connected together for either a greater voltage or current output.
Ohm's Law
Storage Battery
Electron
Step- Down Transformer
9. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Ohm's Law
Primary Cell
Power
Series - Parallel Circuit
10. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Free Electrons
Horsepower
Wattmeter
Magnetic Pole
11. A unit of power.
Rotor
Meter
Lagging Current
Watt
12. An instrument for measuring electric current
Amp Meter
Watt
Kilowatt
Micro Ohm
13. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Nucleus
Current
Horsepower
Proton
14. A device used to change the voltage of an alternating current circuit.
Electrolyte
Molecule
Transformer
Rotor
15. One millionth of an ohm.
Condenser
Magnetic Circuit
Magnetic Pole
Micro Ohm
16. A rate of movement of electrons through a conductor.
Circuit
Lines of Force
Current
Coulomb
17. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Short Circuit
Storage Battery
Watt
Magnetic Poles
18. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Conductor
Micro Volt
Electron Flow
19. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Alternator
Electric Generator
Artificial Magnet
Coulomb
20. The rotating member of an electrical machine.
Parallel Circuit
Valance Electron
Power
Rotor
21. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Kilowatt Hour
Fuse
Primary Winding
Step-Up Transformer
22. An alternating current which current cycle begins earlier than its voltage cycle.
Electron Flow
Magnetic Pole
Three -Phase Circuit
Leading Current
23. 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)
Parallel Circuit
Magnetic Pole
Transformer
Leading Current
24. A resistor designed so that its resistance is readily adjusted.
Rheostat
Micro Ohm
Electrode
Magnetic Lines of Force
25. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Ohm
Lines of Force
Factors governing the Value of EMF of a Generator
'Crose Phase'
26. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Meter
Leading Current
Short Circuit
Residual Magnetism
27. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Rotor
Electro- Motive Force
Resistance
Wattmeter
28. The dissimilar metals which are placed in an electrolyte to form a cell.
Molecule
Three -Phase Circuit
Electrode
Parallel Circuit
29. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Series Circuit
Electromagnetic Induction
Plates
Electrolyte
30. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Current
Kilowatt Hour
Micro Ohm
Artificial Magnet
31. 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
Meter
Alternating Current
Coulomb
32. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Static Electrical Charge
Bound Electrons
Meter
33. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Voltmeter
Magnetic Material
Shells
Ampere
34. 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.
Primary Winding
Series Circuit
Volt
Potential Difference
35. A circuit with more than one path. Current branches to flow in every available path.
Parallel Circuit
Magnetic Material
Factors Governing Resistance
Lagging Current
36. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Rotor
Voltmeter
Primary Cell
Magnetic Circuit
37. 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.
Potential Difference
Voltage Drop
Proton
Power
38. 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.
Ohm's Law
Electron Flow
Electromagnetic Induction
Volt
39. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Bimetallic Strip
Magnetic Lines of Force
Valance Electron
Factors Governing Resistance
40. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Micro Volt
Voltmeter
Secondary Cell
Short Circuit
41. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Ohm's Law
Voltage Drop
Permeability
Leading Current
42. A material which can be magnetized - principally iron.
Frequency
Magnetic Material
Proton
Potential Difference
43. One- thousandth of volt.
Horsepower
Step- Down Transformer
Millivolt
Electromagnetic Induction
44. 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.
Series - Parallel Circuit
Leading Current
Circuit
Factors governing the Value of EMF of a Generator
45. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Magnetic Lines of Force
Micro Ampere
Current
46. Single POSITIVE electrical charge - located in the middle of an atom.
Proton
Magnetism
Electron Flow
Power
47. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Coulomb
Leading Current
Condenser
Lines of Force
48. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Primary Winding
'Crose Phase'
Bound Electrons
Voltage Drop
49. Iron and certain alloys of iron which are magnetized by artificial means.
Voltage Drop
Resistor
Lines of Force
Artificial Magnet
50. Negative charge of electricity
Electron
Magnetic Field
Ohm's Law
Kilowatt Hour