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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. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.
Proton
Secondary Winding
Magnetic Field
Resistor
2. The dissimilar metals which are placed in an electrolyte to form a cell.
Mega Ohm
Storage Battery
Short Circuit
Electrode
3. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Plates
Lines of Force
Resistance
Magnetic Lines of Force
4. Meter used to measure resistance in an electrical circuit.
Conductor
Watt
Magnetic Circuit
Ohmmeter
5. 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
Proton
Secondary Cell
Wattmeter
6. Positive charge of electricity. Located in the nucleus of the atom.
Current
Kilowatt Hour
Proton
Magnetic Field
7. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Alternator
Circuit
Armature
Artificial Magnet
8. 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
Magnetic Circuit
Short Circuit
Cycle
9. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Alternating Current
Series Circuit
Magnetism
Cycle
10. A unit of POWER. 1 kilowatt = 1 -000 watts
Kilowatt
Resistor
Series Circuit
Potential Difference
11. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Primary Winding
Magnetism
Primary Cell
Series Circuit
12. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Natural Magnet
Voltage Drop
Millivolt
Kilowatt Hour
13. One million ohms.
Voltmeter
Atom
Mega Ohm
Resistance
14. Shows relationship between Current - Voltage - Wattage and Resistance.
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15. Occurs when a stream of electrons are caused to move through a conductor.
Resistor
'Crose Phase'
Current
Primary Winding
16. A circuit with only one path for current to flow. There are no branches.
Lagging Current
Short Circuit
Series Circuit
Millivolt
17. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Molecule
Valance Electron
Lines of Force
Electro- Motive Force
18. A unit of power.
Bound Electrons
Plates
Micro Ohm
Watt
19. A complete sequence of events - as an alternating- current cycle.
Electrical Circuit
Meter
Ohmmeter
Cycle
20. 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.
Nucleus
Micro Volt
Three -Phase Circuit
Valance Electron
21. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Fuse
Ohm's Law
Electrical Circuit
Proton
22. A rate of movement of electrons through a conductor.
Static Electrical Charge
Rheostat
Micro Ohm
Current
23. A circuit in which there is resistance (load) connected both in series and parallel.
Mega Ohm
Series - Parallel Circuit
Short Circuit
Alternating Current
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)
Magnetic Pole
Horsepower
Shells
Parallel Circuit
25. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Proton
Step- Down Transformer
Plates
Kilowatt Hour
26. 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.
Resistance
Impedance
Circuit
Factors Governing Resistance
27. 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.
Resistor
Horsepower
Series Circuit
Micro Ohm
28. One- thousandth of volt.
Molecule
Alternator
Conductor
Millivolt
29. 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
Horsepower
Armature
Electrical Circuit
Amp Meter
30. A material that has many free electrons thus allowing electric current to flow through it easily.
Cycle
Conductor
Atom
Primary Cell
31. 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.
Electrolyte
Watt
Bimetallic Strip
Resistance
32. 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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33. Total and complete opposition to the flow of electrons
Impedance
Mega Ohm
Insulator
Proton
34. 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.
Electromagnet
Frequency
Parallel Circuit
Magnetic Circuit
35. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Permanent Magnet
Magnetic Field
Watt
Volt
36. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Static Electrical Charge
Coulomb
Parallel Circuit
Micro Ampere
37. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Free Electrons
Micro Ampere
Amp Meter
Artificial Magnet
38. A circuit with two or more paths for the current to take.
Series - Parallel Circuit
Parallel Circuit
Rotor
Voltmeter
39. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Electron Flow
Short Circuit
Cycle
Kilowatt Hour
40. A material with few free electrons. A structure or material used to prevent the passage of current.
Voltmeter
Electrode
Ohm's Law
Insulator
41. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Armature
Ohm
Condenser
Ohmmeter
42. In a battery - the electrode which takes up the electrons returning from the external circuit.
Shells
Positive Plate
Mega Ohm
Rheostat
43. One- thousandth of a ampere
Milliampere
Free Electrons
Rheostat
Factors governing the Value of EMF of a Generator
44. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.
Bound Electrons
Bimetallic Strip
Wattmeter
Transformer
45. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Mega Ohm
Permanent Magnet
Magnetic Circuit
Secondary Cell
46. 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.
Power
Lines of Force
Mega Ohm
Potential Difference
47. Smallest part a substance can physically divided into composed of 2 or more atoms.
Nucleus
Molecule
Potential Difference
Condenser
48. One millionth of an ampere.
Series - Parallel Circuit
Micro Ampere
Resistance
Non - Magnetic Material
49. Single POSITIVE electrical charge - located in the middle of an atom.
Rotor
Primary Winding
Circuit
Proton
50. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Insulator
Wattmeter
Ampere
Shells