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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. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Permanent Magnet
Milliampere
Rotor
Atom
2. The space around a magnet in which the magnetic force is felt.
Coulomb
Magnetism
Voltmeter
Magnetic Field
3. 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
Artificial Magnet
Three -Phase Circuit
Voltmeter
4. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Step- Down Transformer
Factors governing the Value of EMF of a Generator
Leading Current
Molecule
5. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Electrical Circuit
Electrode
Electric Generator
Circuit
6. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Magnetic Pole
Free Electrons
Permanent Magnet
Circuit
7. 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
Secondary Cell
Storage Battery
Electrical Circuit
Magnetic Pole
8. 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.
Transformer
Conductor
Power
Milliampere
9. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Voltmeter
Bimetallic Strip
Electromagnetic Induction
Residual Magnetism
10. A circuit with more than one path. Current branches to flow in every available path.
Secondary Cell
Parallel Circuit
Kilowatt Hour
Volt
11. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Electromagnet
Natural Magnet
Secondary Cell
Permeability
12. 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
Lagging Current
Mega Ohm
Ohmmeter
13. Total and complete opposition to the flow of electrons
Impedance
Storage Battery
Permeability
Micro Volt
14. 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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15. A material which can be magnetized - principally iron.
Magnetic Material
Alternator
Amp Meter
Artificial Magnet
16. An alternating current which current cycle begins later that its voltage cycle.
Ohmmeter
Lagging Current
Kilowatt Hour
Potential Difference
17. The dissimilar metals which are placed in an electrolyte to form a cell.
Electro- Motive Force
Factors governing the Value of EMF of a Generator
Electrode
Leading Current
18. Shows relationship between Current - Voltage - Wattage and Resistance.
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19. 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.
Voltmeter
Secondary Cell
Potential Difference
Insulator
20. One- thousandth of volt.
Atom
Millivolt
Bimetallic Strip
Bound Electrons
21. Occurs when a stream of electrons are caused to move through a conductor.
Current
Ohm
Artificial Magnet
Fuse
22. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)
Magnetic Lines of Force
Transformer
Potential Difference
Fuse
23. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Permeability
Horsepower
Volt
Proton
24. A material that has many free electrons thus allowing electric current to flow through it easily.
Voltmeter
Secondary Cell
Primary Winding
Conductor
25. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Natural Magnet
Electron Flow
Insulator
Condenser
26. One millionth of an ampere.
Proton
Three -Phase Circuit
Kilowatt Hour
Micro Ampere
27. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.
Ampere
Millivolt
Plates
Condenser
28. A measuring device.
Volt
Voltmeter
Meter
Condenser
29. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Micro Ohm
Factors Governing Resistance
Primary Winding
Series Circuit
30. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Cycle
Milliampere
Ohmmeter
Non - Magnetic Material
31. Several secondary cells connected together for either a greater voltage or current output.
Factors governing the Value of EMF of a Generator
Storage Battery
Electron
Potential Difference
32. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).
Electro- Motive Force
Bound Electrons
Electron
Electromagnetic Induction
33. A resistor designed so that its resistance is readily adjusted.
Rheostat
Wattmeter
Voltage Drop
Proton
34. 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.
Electron
Ohm's Law
Bimetallic Strip
Positive Plate
35. A unit of power.
Natural Magnet
Watt
Step- Down Transformer
Electrolyte
36. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field
Cycle
Electromagnet
'Crose Phase'
Factors governing the Value of EMF of a Generator
37. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.
Secondary Winding
Magnetism
Short Circuit
Non - Magnetic Material
38. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Magnetic Poles
Resistance
Electron
Primary Cell
39. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Voltage Drop
Series Circuit
Kilowatt Hour
Parallel Circuit
40. Negative charge of electricity
Primary Winding
Secondary Winding
Electron
Volt
41. Opposition to current flow
Factors Governing Resistance
Natural Magnet
Resistance
Positive Plate
42. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.
Factors Governing Resistance
Armature
Coulomb
Kilowatt
43. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.
Condenser
Electromagnet
Micro Ohm
Primary Cell
44. The unit of Electro- Motive Force
Volt
Proton
Electrical Circuit
Electrode
45. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Secondary Winding
Micro Ohm
Electron Flow
Voltage Drop
46. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Nucleus
Resistance
Step-Up Transformer
47. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.
Secondary Winding
Free Electrons
Storage Battery
Frequency
48. Smallest part a substance can physically divided into composed of 2 or more atoms.
Leading Current
Micro Volt
Molecule
Short Circuit
49. The rotating member of an electrical machine.
Milliampere
Rotor
Kilowatt
Cycle
50. 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)
Natural Magnet
Magnetic Pole
Primary Winding
Valance Electron