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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. One million ohms.
Kilowatt
Parallel Circuit
Mega Ohm
Horsepower
2. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Step- Down Transformer
Step-Up Transformer
Resistor
Plates
3. A material which can be magnetized - principally iron.
Micro Ampere
Magnetic Material
Electro- Motive Force
Fuse
4. 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)
Artificial Magnet
Voltage Drop
Parallel Circuit
Magnetic Pole
5. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Impedance
Bimetallic Strip
Wattmeter
Resistance
6. Smallest part a substance can physically divided into composed of 2 or more atoms.
Free Electrons
Alternator
Factors governing the Value of EMF of a Generator
Molecule
7. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Proton
Alternating Current
Primary Cell
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.
Series - Parallel Circuit
Ohm's Law
Current
Series Circuit
9. A circuit in which there is resistance (load) connected both in series and parallel.
Conductor
Ampere
Electrode
Series - Parallel Circuit
10. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Wattmeter
Step-Up Transformer
Horsepower
Valance Electron
11. 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.
Frequency
Electrical Circuit
Circuit
Kilowatt
12. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Factors Governing Resistance
Mega Ohm
Shells
Electro- Motive Force
13. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Positive Plate
Ohmmeter
Plates
14. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Non - Magnetic Material
Lines of Force
Circuit
Rotor
15. The rotating member of an electrical machine.
Natural Magnet
Rotor
Secondary Winding
Secondary Cell
16. A resistor designed so that its resistance is readily adjusted.
Ohmmeter
Rheostat
Magnetic Poles
Meter
17. A device used to change the voltage of an alternating current circuit.
Alternating Current
Transformer
Primary Winding
Proton
18. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Permeability
Volt
Fuse
Series Circuit
19. 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.
Voltage Drop
Electromagnet
Circuit
Insulator
20. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Short Circuit
Permanent Magnet
Kilowatt
Electromagnet
21. Total and complete opposition to the flow of electrons
Lines of Force
Ohm's Law
Milliampere
Impedance
22. A circuit with more than one path. Current branches to flow in every available path.
Condenser
Proton
Parallel Circuit
Mega Ohm
23. A material with few free electrons. A structure or material used to prevent the passage of current.
'Crose Phase'
Insulator
Primary Cell
Micro Ohm
24. Single POSITIVE electrical charge - located in the middle of an atom.
Proton
Electric Generator
Electron
Cycle
25. 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.
Volt
Lines of Force
Magnetic Field
Valance Electron
26. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Non - Magnetic Material
Series Circuit
Short Circuit
Frequency
27. Meter used to measure resistance in an electrical circuit.
Current
Ohmmeter
Shells
Atom
28. 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.
Alternating Current
Impedance
Artificial Magnet
Voltage Drop
29. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Fuse
Secondary Winding
Electron
Valance Electron
30. 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.
Permeability
Wattmeter
Alternating Current
Power
31. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Electrode
Magnetic Field
Plates
Insulator
32. Coil connected to the source of power on a transformer.
Series - Parallel Circuit
Watt
Primary Winding
Voltage Drop
33. 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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34. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Natural Magnet
Magnetic Poles
Ampere
Voltmeter
35. An alternating current which current cycle begins later that its voltage cycle.
Three -Phase Circuit
Parallel Circuit
Lagging Current
Primary Winding
36. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Artificial Magnet
Magnetic Field
Electric Generator
Frequency
37. Lines representing the direction of the magnetic force in a magnetic field.
Coulomb
Magnetic Lines of Force
Electrical Circuit
Atom
38. A unit of power.
Electrolyte
Watt
Leading Current
Horsepower
39. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Series - Parallel Circuit
Magnetic Circuit
Rotor
Electromagnetic Induction
40. 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.
Parallel Circuit
Condenser
Factors Governing Resistance
Potential Difference
41. A complete sequence of events - as an alternating- current cycle.
Short Circuit
Free Electrons
Coulomb
Cycle
42. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Proton
Magnetism
Micro Volt
Lines of Force
43. The number of cycles per second. Example: 60 cycles per second alternating current.
Rotor
Frequency
Magnetic Pole
Lagging Current
44. A circuit with only one path for current to flow. There are no branches.
Fuse
Residual Magnetism
Series Circuit
Magnetism
45. Shows relationship between Current - Voltage - Wattage and Resistance.
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46. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Natural Magnet
Step- Down Transformer
Electron
Series Circuit
47. Several secondary cells connected together for either a greater voltage or current output.
Secondary Cell
Storage Battery
Parallel Circuit
Magnetic Pole
48. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Lines of Force
Three -Phase Circuit
Watt
Magnetic Pole
49. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Step- Down Transformer
Residual Magnetism
Factors governing the Value of EMF of a Generator
Secondary Winding
50. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Primary Winding
Lagging Current
Alternating Current
Free Electrons