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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. A rate of movement of electrons through a conductor.
Factors governing the Value of EMF of a Generator
Primary Winding
Current
Bound Electrons
2. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Factors governing the Value of EMF of a Generator
Primary Cell
Kilowatt Hour
3. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Rheostat
Frequency
Wattmeter
Artificial Magnet
4. The number of cycles per second. Example: 60 cycles per second alternating current.
Insulator
Valance Electron
Permanent Magnet
Frequency
5. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Atom
Shells
Secondary Cell
Ohm
6. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Frequency
Lines of Force
Primary Winding
Leading Current
7. The condition where the free electrons are caused to move in the same direction along or through a conductor.
Short Circuit
Electrode
Voltage Drop
Electron Flow
8. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.
Voltage Drop
Series - Parallel Circuit
Residual Magnetism
Free Electrons
9. A unit of POWER. 1 kilowatt = 1 -000 watts
Kilowatt Hour
Kilowatt
Ohmmeter
Voltmeter
10. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Volt
Resistor
Factors Governing Resistance
Electron
11. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Step-Up Transformer
Secondary Winding
Artificial Magnet
Volt
12. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.
Step- Down Transformer
Bound Electrons
Magnetic Pole
Voltage Drop
13. The dissimilar metals which are placed in an electrolyte to form a cell.
Electron Flow
Magnetism
Electrode
Kilowatt Hour
14. A generator that produces alternating current.
Ohm
Storage Battery
Insulator
Alternator
15. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Electrode
Insulator
Magnetic Field
16. A circuit with more than one path. Current branches to flow in every available path.
Watt
Static Electrical Charge
Parallel Circuit
Series - Parallel Circuit
17. 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.
Voltage Drop
Potential Difference
Magnetic Field
Shells
18. A unit of power.
Primary Winding
Step-Up Transformer
Positive Plate
Watt
19. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Condenser
Coulomb
Micro Ampere
Plates
20. The liquid solution (sometime a paste) in which the electrodes are placed.
Atom
Electrolyte
Residual Magnetism
Resistance
21. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Power
Resistor
Millivolt
Milliampere
22. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Micro Volt
Voltmeter
Three -Phase Circuit
Circuit
23. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Step-Up Transformer
Factors Governing Resistance
Ampere
Free Electrons
24. 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)
Voltmeter
Millivolt
Magnetic Pole
Circuit
25. Positive charge of electricity. Located in the nucleus of the atom.
Wattmeter
Proton
Step- Down Transformer
Magnetic Field
26. The center portion of an atom which has a positive electrical charge.
Lines of Force
Current
Micro Ohm
Nucleus
27. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Factors governing the Value of EMF of a Generator
Magnetic Field
Electromagnetic Induction
Shells
28. Coil connected to the source of power on a transformer.
Primary Cell
Lines of Force
Primary Winding
Step- Down Transformer
29. 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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30. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Factors governing the Value of EMF of a Generator
Alternator
Micro Volt
Magnetic Circuit
31. Smallest part a substance can physically divided into composed of 2 or more atoms.
Watt
Electrolyte
Molecule
Magnetic Circuit
32. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Series Circuit
Alternating Current
Ohm's Law
Kilowatt
33. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Voltmeter
Secondary Winding
Magnetic Poles
Cycle
34. An alternating current which current cycle begins earlier than its voltage cycle.
Step- Down Transformer
Millivolt
Molecule
Leading Current
35. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Permanent Magnet
Molecule
Millivolt
Magnetic Circuit
36. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Positive Plate
Free Electrons
Bound Electrons
Series - Parallel Circuit
37. Several secondary cells connected together for either a greater voltage or current output.
Step-Up Transformer
Storage Battery
Lines of Force
Micro Ampere
38. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Parallel Circuit
Cycle
Magnetism
Insulator
39. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Alternating Current
Artificial Magnet
Kilowatt Hour
Molecule
40. A material with few free electrons. A structure or material used to prevent the passage of current.
Conductor
Insulator
Free Electrons
Electrode
41. 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.
Factors Governing Resistance
Voltmeter
Step- Down Transformer
Valance Electron
42. 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.
Electron
Permeability
Circuit
Magnetic Field
43. A material that has many free electrons thus allowing electric current to flow through it easily.
Shells
Nucleus
Conductor
Potential Difference
44. The unit of Electro- Motive Force
Secondary Cell
Volt
Electron
Proton
45. A measuring device.
Meter
Positive Plate
Current
Coulomb
46. 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.
Millivolt
Horsepower
Micro Volt
Electromagnet
47. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Ohmmeter
Potential Difference
Micro Ampere
Atom
48. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Meter
Step- Down Transformer
Armature
Residual Magnetism
49. Lines representing the direction of the magnetic force in a magnetic field.
Series - Parallel Circuit
Bound Electrons
Magnetic Lines of Force
Electrolyte
50. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Lagging Current
Milliampere
Alternator