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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. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Non - Magnetic Material
Ohm's Law
Plates
2. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Series - Parallel Circuit
Free Electrons
Magnetic Field
Primary Winding
3. One- thousandth of volt.
Step- Down Transformer
Circuit
Ohm's Law
Millivolt
4. 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.
Electromagnet
Circuit
Voltmeter
Meter
5. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Bound Electrons
Magnetism
Three -Phase Circuit
Horsepower
6. In a battery - the electrode which takes up the electrons returning from the external circuit.
Permeability
Electron
Alternating Current
Positive Plate
7. A unit of power.
Potential Difference
Shells
Watt
Series Circuit
8. Positive charge of electricity. Located in the nucleus of the atom.
Parallel Circuit
Factors governing the Value of EMF of a Generator
Proton
Series Circuit
9. Single POSITIVE electrical charge - located in the middle of an atom.
Voltmeter
Proton
Coulomb
Kilowatt
10. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Kilowatt Hour
Series Circuit
Nucleus
Fuse
11. The dissimilar metals which are placed in an electrolyte to form a cell.
Electrode
Fuse
Potential Difference
Series Circuit
12. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Magnetic Material
Secondary Winding
Nucleus
13. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Bimetallic Strip
Rotor
Voltage Drop
Permeability
14. Total and complete opposition to the flow of electrons
Impedance
Primary Cell
Armature
Electric Generator
15. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Millivolt
Magnetic Pole
Step- Down Transformer
Power
16. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Magnetic Circuit
Permanent Magnet
Meter
Kilowatt
17. Coil connected to the source of power on a transformer.
Electron Flow
Ohm's Law
Primary Winding
Rotor
18. The unit of Electro- Motive Force
Volt
Ampere
Series - Parallel Circuit
Proton
19. One millionth of an ampere.
Residual Magnetism
Molecule
Static Electrical Charge
Micro Ampere
20. One- thousandth of a ampere
Magnetic Lines of Force
Residual Magnetism
Milliampere
Electric Generator
21. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Magnetic Material
Three -Phase Circuit
Electron
Circuit
22. Lines representing the direction of the magnetic force in a magnetic field.
Ampere
Rheostat
Magnetic Lines of Force
Free Electrons
23. 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
Kilowatt Hour
Voltage Drop
Electrical Circuit
Electron Flow
24. The property of a material that opposes the flow of current.
Magnetic Pole
Resistance
Molecule
Artificial Magnet
25. A complete sequence of events - as an alternating- current cycle.
Micro Volt
Armature
Cycle
Primary Cell
26. A circuit with two or more paths for the current to take.
Coulomb
Magnetic Field
Proton
Parallel Circuit
27. The number of cycles per second. Example: 60 cycles per second alternating current.
Frequency
Millivolt
Short Circuit
Molecule
28. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Molecule
Electromagnetic Induction
Millivolt
Static Electrical Charge
29. A circuit in which there is resistance (load) connected both in series and parallel.
Factors governing the Value of EMF of a Generator
Wattmeter
Series - Parallel Circuit
Ohm
30. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Positive Plate
Magnetic Field
Plates
Static Electrical Charge
31. One millionth of a volt.
Current
Bound Electrons
Micro Volt
Rheostat
32. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Millivolt
Electro- Motive Force
Voltage Drop
Factors governing the Value of EMF of a Generator
33. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Magnetic Circuit
Ohm
Potential Difference
Bimetallic Strip
34. 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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35. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Step- Down Transformer
Current
Ohm
36. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Three -Phase Circuit
Ohmmeter
Permanent Magnet
Atom
37. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Milliampere
Primary Cell
Artificial Magnet
Wattmeter
38. A measuring device.
Artificial Magnet
Magnetic Lines of Force
Magnetic Poles
Meter
39. The rotating member of an electrical machine.
Rotor
Millivolt
Electrode
Artificial Magnet
40. A resistor designed so that its resistance is readily adjusted.
Rheostat
Ohm's Law
Transformer
Voltage Drop
41. A generator that produces alternating current.
Plates
Three -Phase Circuit
Alternator
Magnetism
42. The center portion of an atom which has a positive electrical charge.
Bimetallic Strip
Magnetic Circuit
Series - Parallel Circuit
Nucleus
43. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Step-Up Transformer
Resistor
Kilowatt
Resistance
44. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Conductor
Wattmeter
Lagging Current
Transformer
45. The space around a magnet in which the magnetic force is felt.
Resistor
Magnetic Field
Factors Governing Resistance
Step- Down Transformer
46. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.
Electromagnetic Induction
Coulomb
Fuse
Static Electrical Charge
47. 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.
Ohm's Law
Series Circuit
Electric Generator
Volt
48. A circuit with only one path for current to flow. There are no branches.
Permeability
Series Circuit
Ohmmeter
Electron Flow
49. 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.
Kilowatt Hour
Volt
Meter
Circuit
50. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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