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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. 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.
Residual Magnetism
Valance Electron
Magnetic Field
Magnetic Poles
2. Occurs when a stream of electrons are caused to move through a conductor.
Bound Electrons
Electron
Atom
Current
3. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Residual Magnetism
Volt
Coulomb
Electromagnetic Induction
4. A circuit with only one path for current to flow. There are no branches.
Static Electrical Charge
Rotor
Series Circuit
Ampere
5. One- thousandth of a ampere
Non - Magnetic Material
Series - Parallel Circuit
Milliampere
Current
6. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Ohm
Magnetism
Resistance
Factors Governing Resistance
7. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Meter
Atom
Parallel Circuit
Armature
8. A unit of POWER. 1 kilowatt = 1 -000 watts
Kilowatt
Alternator
Factors governing the Value of EMF of a Generator
Potential Difference
9. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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10. The unit of Electro- Motive Force
Electric Generator
Volt
Magnetic Poles
Current
11. One millionth of an ampere.
Micro Ampere
Magnetic Field
Horsepower
Electromagnet
12. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Micro Ampere
Free Electrons
Nucleus
Fuse
13. 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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14. 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.
Atom
Step- Down Transformer
Magnetic Field
Power
15. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Valance Electron
Potential Difference
Electromagnet
Residual Magnetism
16. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Magnetic Field
Wattmeter
Ohm
Series - Parallel Circuit
17. The space around a magnet in which the magnetic force is felt.
Electron
Magnetic Field
Electrode
Rotor
18. The rotating member of an electrical machine.
Rotor
Parallel Circuit
Amp Meter
Current
19. Positive charge of electricity. Located in the nucleus of the atom.
Magnetic Lines of Force
Permeability
Proton
Primary Winding
20. A rate of movement of electrons through a conductor.
Electron
Current
Positive Plate
Parallel Circuit
21. A material with few free electrons. A structure or material used to prevent the passage of current.
Insulator
Magnetic Lines of Force
Bound Electrons
Electron
22. 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.
Nucleus
Kilowatt Hour
Series Circuit
Micro Ohm
23. One million ohms.
Electric Generator
Mega Ohm
Lines of Force
Micro Ampere
24. 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
Electrical Circuit
Primary Cell
Electric Generator
Secondary Cell
25. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Factors Governing Resistance
Insulator
Bound Electrons
Volt
26. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Parallel Circuit
Atom
Kilowatt
Permanent Magnet
27. A complete sequence of events - as an alternating- current cycle.
Condenser
Current
Frequency
Cycle
28. One millionth of an ohm.
Electrical Circuit
Non - Magnetic Material
Valance Electron
Micro Ohm
29. Iron and certain alloys of iron which are magnetized by artificial means.
Millivolt
Magnetic Field
Artificial Magnet
Factors Governing Resistance
30. The property of a material that opposes the flow of current.
Rheostat
Resistance
Electrical Circuit
Ampere
31. Lines representing the direction of the magnetic force in a magnetic field.
Non - Magnetic Material
Magnetic Lines of Force
Electron Flow
Magnetism
32. Single POSITIVE electrical charge - located in the middle of an atom.
Alternating Current
Magnetic Circuit
Atom
Proton
33. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Lagging Current
Circuit
Voltmeter
Amp Meter
34. One- thousandth of volt.
Meter
Lagging Current
Secondary Winding
Millivolt
35. 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
Alternating Current
Horsepower
Parallel Circuit
36. The dissimilar metals which are placed in an electrolyte to form a cell.
Armature
Resistor
Electrode
Factors Governing Resistance
37. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Volt
Series Circuit
Electrical Circuit
Fuse
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.
Artificial Magnet
Magnetic Lines of Force
Kilowatt
Volt
39. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Electrolyte
Volt
Magnetic Circuit
40. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Milliampere
Millivolt
Three -Phase Circuit
Artificial Magnet
41. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Electromagnetic Induction
Potential Difference
Primary Cell
Mega Ohm
42. A unit of power.
Watt
Ohm's Law
Cycle
Valance Electron
43. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Step- Down Transformer
Milliampere
Proton
44. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electric Generator
Potential Difference
Free Electrons
Cycle
45. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Valance Electron
Three -Phase Circuit
Power
46. Shows relationship between Current - Voltage - Wattage and Resistance.
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47. Smallest part a substance can physically divided into composed of 2 or more atoms.
Molecule
Watt
Voltage Drop
Transformer
48. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Ohmmeter
Electron
Plates
Non - Magnetic Material
49. Negative charge of electricity
Magnetic Material
Electric Generator
Electron
Series Circuit
50. A generator that produces alternating current.
Ohm's Law
Armature
Lines of Force
Alternator