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Test your basic knowledge |
Basic Electricity Vocab
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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. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Armature
Magnetic Poles
Shells
Magnetic Field
2. An instrument for measuring electric current
Conductor
Amp Meter
Armature
Magnetic Field
3. Single POSITIVE electrical charge - located in the middle of an atom.
Proton
Micro Ohm
Natural Magnet
Volt
4. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Electron Flow
Circuit
Step-Up Transformer
5. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Micro Volt
Electromagnet
Volt
6. Coil connected to the source of power on a transformer.
Primary Winding
Residual Magnetism
Leading Current
Electrical Circuit
7. A device used to change the voltage of an alternating current circuit.
Electromagnetic Induction
Static Electrical Charge
Transformer
Electrolyte
8. A material that has many free electrons thus allowing electric current to flow through it easily.
Magnetic Lines of Force
Parallel Circuit
Ohm
Conductor
9. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Milliampere
Magnetic Circuit
Horsepower
10. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Coulomb
Electron
Fuse
Positive Plate
11. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Alternating Current
Primary Winding
Bound Electrons
Residual Magnetism
12. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Milliampere
Magnetism
Electron Flow
Valance Electron
13. Negative charge of electricity
Lines of Force
Armature
Electron
Power
14. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Electrical Circuit
Condenser
Ohmmeter
15. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Cycle
Ohmmeter
Bound Electrons
Electromagnetic Induction
16. Lines representing the direction of the magnetic force in a magnetic field.
Magnetic Lines of Force
Secondary Winding
Shells
Mega Ohm
17. A circuit with two or more paths for the current to take.
Electromagnetic Induction
Parallel Circuit
Potential Difference
Voltage Drop
18. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Cycle
Atom
Current
Frequency
19. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Electrolyte
Voltage Drop
Electro- Motive Force
Condenser
20. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Leading Current
Current
Electric Generator
Fuse
21. Meter used to measure resistance in an electrical circuit.
Kilowatt
Ohmmeter
Resistor
Electrode
22. The liquid solution (sometime a paste) in which the electrodes are placed.
Kilowatt Hour
Electrolyte
Milliampere
Leading Current
23. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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24. A unit of POWER. 1 kilowatt = 1 -000 watts
Electromagnet
Kilowatt
Parallel Circuit
Artificial Magnet
25. Iron and certain alloys of iron which are magnetized by artificial means.
Magnetism
Artificial Magnet
Rotor
Meter
26. An alternating current which current cycle begins earlier than its voltage cycle.
Bound Electrons
Potential Difference
Leading Current
Step- Down Transformer
27. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Coulomb
Atom
Electromagnet
Insulator
28. 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
Permanent Magnet
Static Electrical Charge
Resistor
29. One millionth of an ohm.
Condenser
Voltage Drop
Magnetic Poles
Micro Ohm
30. 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.
Plates
Circuit
Resistance
Series Circuit
31. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Current
Free Electrons
Alternating Current
Voltage Drop
32. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Magnetic Field
Non - Magnetic Material
Fuse
Atom
33. A measuring device.
Impedance
Meter
Series Circuit
Condenser
34. Occurs when a stream of electrons are caused to move through a conductor.
Current
Shells
Ampere
Micro Ohm
35. The number of cycles per second. Example: 60 cycles per second alternating current.
Series Circuit
Conductor
Frequency
Magnetic Field
36. One million ohms.
Coulomb
Mega Ohm
Series Circuit
Rheostat
37. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Secondary Cell
Series - Parallel Circuit
Residual Magnetism
Short Circuit
38. A circuit with only one path for current to flow. There are no branches.
Series Circuit
Series - Parallel Circuit
Horsepower
Valance Electron
39. Total and complete opposition to the flow of electrons
Impedance
Atom
Primary Cell
Micro Ohm
40. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Primary Cell
Artificial Magnet
Magnetic Pole
41. 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.
Armature
Circuit
Step-Up Transformer
Bound Electrons
42. The rotating member of an electrical machine.
Residual Magnetism
Rotor
Alternator
Magnetic Lines of Force
43. Opposition to current flow
Resistance
Amp Meter
Electromagnetic Induction
Magnetic Circuit
44. 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.
Volt
Parallel Circuit
Atom
Free Electrons
45. The space around a magnet in which the magnetic force is felt.
Magnetic Field
Secondary Cell
Volt
Series Circuit
46. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Resistor
Parallel Circuit
Bimetallic Strip
Series Circuit
47. A resistor designed so that its resistance is readily adjusted.
Valance Electron
Rheostat
Bound Electrons
Magnetic Circuit
48. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.
Ohmmeter
Permanent Magnet
Bimetallic Strip
Current
49. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Alternator
Non - Magnetic Material
Meter
Step- Down Transformer
50. The unit of Electro- Motive Force
Magnetic Field
Power
Volt
Voltage Drop