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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 dissimilar metals which are placed in an electrolyte to form a cell.
Molecule
Magnetic Material
Electromagnet
Electrode
2. A circuit with more than one path. Current branches to flow in every available path.
Artificial Magnet
Kilowatt
Transformer
Parallel Circuit
3. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Coulomb
Watt
Electron Flow
4. Smallest part a substance can physically divided into composed of 2 or more atoms.
Magnetic Field
Molecule
Static Electrical Charge
Series Circuit
5. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Condenser
Fuse
Atom
Series Circuit
6. Single POSITIVE electrical charge - located in the middle of an atom.
Proton
Non - Magnetic Material
Magnetic Lines of Force
Rotor
7. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Impedance
Step-Up Transformer
Magnetic Lines of Force
Magnetic Material
8. 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.
Electrolyte
Voltage Drop
Leading Current
Artificial Magnet
9. Coil connected to the source of power on a transformer.
Volt
Transformer
Ampere
Primary Winding
10. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Free Electrons
Positive Plate
Three -Phase Circuit
Shells
11. The center portion of an atom which has a positive electrical charge.
Nucleus
Rheostat
Leading Current
Three -Phase Circuit
12. A material which can be magnetized - principally iron.
Current
Magnetic Material
Alternating Current
Step-Up Transformer
13. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Nucleus
Series Circuit
Power
Primary Cell
14. Shows relationship between Current - Voltage - Wattage and Resistance.
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15. Several secondary cells connected together for either a greater voltage or current output.
Storage Battery
Electromagnet
Magnetic Poles
Current
16. A circuit in which there is resistance (load) connected both in series and parallel.
Power
Parallel Circuit
Armature
Series - Parallel Circuit
17. One million ohms.
Parallel Circuit
Micro Volt
Factors Governing Resistance
Mega Ohm
18. 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.
Kilowatt Hour
Artificial Magnet
Circuit
Lines of Force
19. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Magnetic Poles
Coulomb
Power
Leading Current
20. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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21. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Short Circuit
Proton
Magnetic Circuit
Atom
22. One- thousandth of a ampere
Insulator
Watt
Proton
Milliampere
23. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Leading Current
Micro Ampere
Bound Electrons
Frequency
24. 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.
Alternator
Ohm's Law
Residual Magnetism
Electromagnet
25. A material with few free electrons. A structure or material used to prevent the passage of current.
Kilowatt Hour
Resistance
Insulator
Nucleus
26. One- thousandth of volt.
Millivolt
Magnetic Lines of Force
Valance Electron
Potential Difference
27. An alternating current which current cycle begins later that its voltage cycle.
Resistor
Lagging Current
Alternating Current
Fuse
28. In a battery - the electrode which takes up the electrons returning from the external circuit.
Electrolyte
Lagging Current
Positive Plate
Lines of Force
29. 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
Frequency
Three -Phase Circuit
Resistance
Electrical Circuit
30. 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.
Potential Difference
Ohm's Law
Millivolt
Voltage Drop
31. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Milliampere
Cycle
Electrolyte
32. The unit of Electro- Motive Force
Volt
Millivolt
Fuse
Potential Difference
33. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Micro Volt
Electro- Motive Force
Insulator
Transformer
34. A measuring device.
Kilowatt
Voltage Drop
Ohm's Law
Meter
35. 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
Storage Battery
Positive Plate
Voltmeter
36. Total and complete opposition to the flow of electrons
Voltage Drop
Series Circuit
Impedance
Shells
37. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Proton
Factors Governing Resistance
Step- Down Transformer
Magnetic Field
38. 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.
Primary Cell
Valance Electron
Lagging Current
Resistance
39. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Cycle
Milliampere
Permeability
Short Circuit
40. A circuit with only one path for current to flow. There are no branches.
Alternating Current
Magnetic Circuit
Series Circuit
Magnetic Lines of Force
41. Lines representing the direction of the magnetic force in a magnetic field.
Ampere
Insulator
Voltage Drop
Magnetic Lines of Force
42. A complete sequence of events - as an alternating- current cycle.
Atom
Circuit
Ohm's Law
Cycle
43. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Coulomb
Artificial Magnet
Factors governing the Value of EMF of a Generator
Potential Difference
44. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Plates
Free Electrons
Volt
Condenser
45. A circuit with two or more paths for the current to take.
Alternator
Leading Current
Amp Meter
Parallel Circuit
46. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Ohm's Law
Kilowatt Hour
Magnetic Field
Step-Up Transformer
47. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Rheostat
Current
Condenser
Alternating Current
48. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Short Circuit
Horsepower
Electrical Circuit
Non - Magnetic Material
49. 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.
Series Circuit
Parallel Circuit
Ohm's Law
Parallel Circuit
50. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Ohm
Three -Phase Circuit
Permanent Magnet
Plates