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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. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Micro Volt
Short Circuit
Permanent Magnet
Permeability
2. A complete sequence of events - as an alternating- current cycle.
Cycle
Parallel Circuit
Ohm
Magnetic Field
3. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Secondary Cell
Permeability
Molecule
Fuse
4. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Positive Plate
Ampere
Ohm
Lines of Force
5. A measuring device.
Horsepower
Magnetic Field
Alternator
Meter
6. A generator that produces alternating current.
Alternator
Millivolt
Step-Up Transformer
Transformer
7. A circuit in which there is resistance (load) connected both in series and parallel.
Voltmeter
Parallel Circuit
'Crose Phase'
Series - Parallel Circuit
8. Total and complete opposition to the flow of electrons
Wattmeter
'Crose Phase'
Impedance
Kilowatt Hour
9. The area surrounding a magnet in which magnetic properties are exhibited
Horsepower
Lines of Force
Magnetic Field
Current
10. The center portion of an atom which has a positive electrical charge.
Parallel Circuit
Leading Current
Nucleus
Milliampere
11. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Bimetallic Strip
Primary Cell
Short Circuit
Coulomb
12. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Storage Battery
Magnetic Circuit
Coulomb
Ohm
13. Occurs when a stream of electrons are caused to move through a conductor.
Cycle
Current
Proton
Electron
14. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Current
Artificial Magnet
Step- Down Transformer
Non - Magnetic Material
15. The space around a magnet in which the magnetic force is felt.
Wattmeter
Magnetic Field
Voltage Drop
Kilowatt Hour
16. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Horsepower
Conductor
Magnetic Poles
Electron Flow
17. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Millivolt
Electron
Amp Meter
Factors Governing Resistance
18. One millionth of a volt.
Three -Phase Circuit
Watt
Secondary Winding
Micro Volt
19. One- thousandth of a ampere
Electro- Motive Force
Milliampere
Ampere
Watt
20. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Storage Battery
Factors governing the Value of EMF of a Generator
Magnetic Lines of Force
Non - Magnetic Material
21. The dissimilar metals which are placed in an electrolyte to form a cell.
Circuit
Electrode
Meter
Transformer
22. 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
Cycle
Electrical Circuit
Coulomb
Magnetic Field
23. A unit of POWER. 1 kilowatt = 1 -000 watts
Magnetic Field
Factors governing the Value of EMF of a Generator
Kilowatt
Storage Battery
24. One millionth of an ohm.
Micro Ohm
Kilowatt
Factors Governing Resistance
'Crose Phase'
25. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Magnetic Poles
Alternating Current
Non - Magnetic Material
Primary Winding
26. The property of a material that opposes the flow of current.
Plates
Electrical Circuit
Alternator
Resistance
27. 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.
Resistance
Plates
Electromagnet
Armature
28. A rate of movement of electrons through a conductor.
Parallel Circuit
Rotor
Free Electrons
Current
29. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Insulator
Residual Magnetism
Atom
Volt
30. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Meter
Electromagnetic Induction
'Crose Phase'
Magnetic Circuit
31. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Storage Battery
Voltmeter
Shells
Kilowatt Hour
32. Opposition to current flow
Kilowatt Hour
Resistor
Resistance
Wattmeter
33. 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
Three -Phase Circuit
Power
Amp Meter
34. One- thousandth of volt.
Primary Cell
Volt
Fuse
Millivolt
35. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Circuit
Factors governing the Value of EMF of a Generator
Ohm
Magnetic Poles
36. The number of cycles per second. Example: 60 cycles per second alternating current.
Artificial Magnet
Frequency
Atom
Volt
37. 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.
Valance Electron
Magnetism
Lines of Force
Primary Cell
38. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Step-Up Transformer
Bound Electrons
Natural Magnet
Armature
39. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Kilowatt Hour
Shells
Insulator
Condenser
40. Smallest part a substance can physically divided into composed of 2 or more atoms.
Power
Volt
Molecule
Resistor
41. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Voltmeter
Volt
Artificial Magnet
Insulator
42. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrolyte
Atom
Fuse
Condenser
43. A material that has many free electrons thus allowing electric current to flow through it easily.
Micro Volt
Magnetism
Voltage Drop
Conductor
44. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Fuse
Coulomb
Electrolyte
Magnetism
45. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Electron Flow
Electrolyte
Voltage Drop
Three -Phase Circuit
46. 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)
Magnetic Circuit
Current
Plates
Magnetic Pole
47. One million ohms.
Mega Ohm
Static Electrical Charge
Ampere
Lines of Force
48. Coil connected to the source of power on a transformer.
Transformer
Atom
Rotor
Primary Winding
49. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Current
Three -Phase Circuit
Secondary Winding
Magnetism
50. A device used to change the voltage of an alternating current circuit.
Plates
Transformer
Volt
Ohm's Law