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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. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Electrolyte
Lines of Force
Magnetic Circuit
Positive Plate
2. A generator that produces alternating current.
Voltage Drop
Secondary Cell
Conductor
Alternator
3. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Milliampere
Storage Battery
Fuse
Electron
4. The property of a material that opposes the flow of current.
Bound Electrons
Wattmeter
Resistance
Micro Ampere
5. Single POSITIVE electrical charge - located in the middle of an atom.
Condenser
Parallel Circuit
Proton
Resistor
6. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Secondary Winding
Resistance
Coulomb
Micro Volt
7. 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.
Kilowatt
Impedance
Magnetic Material
Voltage Drop
8. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Primary Cell
Wattmeter
Electron Flow
Step-Up Transformer
9. 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
Alternating Current
Milliampere
Electrical Circuit
Power
10. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Horsepower
Resistor
Kilowatt Hour
Armature
11. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Volt
Static Electrical Charge
Magnetic Pole
12. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Static Electrical Charge
Storage Battery
Electromagnetic Induction
Permanent Magnet
13. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Series Circuit
Residual Magnetism
Proton
Shells
14. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Electro- Motive Force
Natural Magnet
Voltmeter
Electric Generator
15. 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.
Bimetallic Strip
Leading Current
Volt
Electromagnet
16. An alternating current which current cycle begins later that its voltage cycle.
Magnetic Field
Lagging Current
Armature
Potential Difference
17. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Shells
Residual Magnetism
Magnetism
Factors governing the Value of EMF of a Generator
18. Several secondary cells connected together for either a greater voltage or current output.
Voltage Drop
Impedance
Valance Electron
Storage Battery
19. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Series - Parallel Circuit
Magnetic Poles
Power
Magnetic Field
20. A complete sequence of events - as an alternating- current cycle.
Volt
Lines of Force
Lagging Current
Cycle
21. One millionth of a volt.
Micro Volt
Artificial Magnet
Frequency
Series Circuit
22. Occurs when a stream of electrons are caused to move through a conductor.
Electron Flow
'Crose Phase'
Current
Rotor
23. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Parallel Circuit
Plates
Alternator
Micro Ampere
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.
Series Circuit
Electromagnet
Electron
Magnetic Material
25. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Resistance
Milliampere
Magnetism
Volt
26. Positive charge of electricity. Located in the nucleus of the atom.
Proton
Current
Bound Electrons
Electromagnetic Induction
27. 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.
Power
Non - Magnetic Material
Magnetic Lines of Force
Magnetic Pole
28. Total and complete opposition to the flow of electrons
Electromagnetic Induction
Cycle
Mega Ohm
Impedance
29. An alternating current which current cycle begins earlier than its voltage cycle.
Leading Current
Wattmeter
Resistance
Series Circuit
30. Lines representing the direction of the magnetic force in a magnetic field.
Parallel Circuit
Magnetic Lines of Force
Lagging Current
Electrolyte
31. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Electron
Three -Phase Circuit
Condenser
Bimetallic Strip
32. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Electrical Circuit
Residual Magnetism
Magnetism
Non - Magnetic Material
33. One millionth of an ampere.
Short Circuit
Series Circuit
Micro Volt
Micro Ampere
34. 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.
Shells
Circuit
Short Circuit
Electro- Motive Force
35. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Primary Cell
Series Circuit
Magnetism
Free Electrons
36. 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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37. 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
Resistor
Proton
Micro Volt
38. 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
Electron
Factors governing the Value of EMF of a Generator
Three -Phase Circuit
39. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Short Circuit
Micro Ampere
Electromagnetic Induction
Resistance
40. The dissimilar metals which are placed in an electrolyte to form a cell.
Frequency
Electrode
Residual Magnetism
Atom
41. A material with few free electrons. A structure or material used to prevent the passage of current.
Circuit
Milliampere
Rotor
Insulator
42. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Series Circuit
Factors Governing Resistance
Electromagnet
Micro Volt
43. An instrument for measuring electric current
Wattmeter
Amp Meter
Proton
Magnetism
44. The liquid solution (sometime a paste) in which the electrodes are placed.
Amp Meter
Electron
Electrolyte
Electron
45. A unit of power.
Milliampere
Three -Phase Circuit
Electromagnetic Induction
Watt
46. Shows relationship between Current - Voltage - Wattage and Resistance.
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47. A material that has many free electrons thus allowing electric current to flow through it easily.
Storage Battery
Electron Flow
Mega Ohm
Conductor
48. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Voltage Drop
Static Electrical Charge
Magnetic Lines of Force
Short Circuit
49. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Non - Magnetic Material
Voltage Drop
Proton
Horsepower
50. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electric Generator
Parallel Circuit
Free Electrons
Micro Volt