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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. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.
Amp Meter
Magnetic Field
Plates
Bound Electrons
2. One millionth of an ampere.
Current
Electro- Motive Force
Free Electrons
Micro Ampere
3. One millionth of a volt.
Milliampere
Electromagnet
Micro Volt
Storage Battery
4. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Rheostat
Electromagnet
Ohm's Law
Horsepower
5. A resistor designed so that its resistance is readily adjusted.
Proton
Rheostat
Non - Magnetic Material
Watt
6. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Transformer
Alternator
Ohm's Law
7. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Power
Secondary Winding
Series Circuit
Magnetic Field
8. The moving part of a dynamo or motor consisting of coils of wire around an iron core.
Leading Current
Armature
Ohmmeter
Kilowatt
9. A circuit with more than one path. Current branches to flow in every available path.
Current
Series Circuit
Proton
Parallel Circuit
10. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.
Frequency
Series Circuit
Electromagnetic Induction
Valance Electron
11. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.
Valance Electron
Step-Up Transformer
Nucleus
Magnetism
12. The center portion of an atom which has a positive electrical charge.
Nucleus
Voltage Drop
Lines of Force
Kilowatt Hour
13. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...
Magnetic Circuit
Non - Magnetic Material
Magnetic Field
Micro Volt
14. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.
Artificial Magnet
Magnetic Circuit
Volt
Permeability
15. A rate of movement of electrons through a conductor.
Resistance
Current
Series - Parallel Circuit
Lines of Force
16. 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.
Natural Magnet
Circuit
Storage Battery
Magnetism
17. Smallest part a substance can physically divided into composed of 2 or more atoms.
Molecule
Rotor
Short Circuit
Plates
18. The property of a material that opposes the flow of current.
Resistance
Parallel Circuit
Secondary Cell
Electron
19. A circuit in which there is resistance (load) connected both in series and parallel.
Series - Parallel Circuit
Magnetic Lines of Force
Impedance
Parallel Circuit
20. A material that has many free electrons thus allowing electric current to flow through it easily.
Secondary Winding
Conductor
Coulomb
Three -Phase Circuit
21. Meter used to measure resistance in an electrical circuit.
Factors Governing Resistance
Alternating Current
Storage Battery
Ohmmeter
22. One millionth of an ohm.
Micro Ohm
Primary Cell
Potential Difference
Lagging Current
23. The area surrounding a magnet in which magnetic properties are exhibited
Mega Ohm
Magnetic Field
Static Electrical Charge
Current
24. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.
Ohm
Lines of Force
'Crose Phase'
Residual Magnetism
25. One million ohms.
Potential Difference
Series Circuit
Mega Ohm
Alternator
26. Occurs when a stream of electrons are caused to move through a conductor.
Current
Bound Electrons
Magnetic Poles
Resistor
27. A complete sequence of events - as an alternating- current cycle.
Cycle
Magnetism
Micro Ampere
Magnetic Material
28. The unit of Electro- Motive Force
Permanent Magnet
Electron
Volt
Resistance
29. Several secondary cells connected together for either a greater voltage or current output.
Valance Electron
Storage Battery
Impedance
Step-Up Transformer
30. A unit of POWER. 1 kilowatt = 1 -000 watts
Magnetic Field
Magnetic Pole
Kilowatt
Electrode
31. 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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32. A device used to change the voltage of an alternating current circuit.
Leading Current
Fuse
Transformer
Ampere
33. In a battery - the electrode which takes up the electrons returning from the external circuit.
Positive Plate
Millivolt
Ohmmeter
Rotor
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.
Potential Difference
Circuit
Bimetallic Strip
Lagging Current
35. A unit of power.
Power
Magnetism
Ohm
Watt
36. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Storage Battery
Armature
Natural Magnet
Electron
37. One- thousandth of volt.
Magnetic Pole
Millivolt
Secondary Winding
Proton
38. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Watt
Alternating Current
Atom
Nucleus
39. An alternating current which current cycle begins later that its voltage cycle.
Lagging Current
Voltage Drop
Wattmeter
Ohm
40. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.
Lines of Force
Rotor
Micro Ohm
Millivolt
41. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Electro- Motive Force
Rheostat
Bound Electrons
Electron
42. Negative charge of electricity
Electron
Ohmmeter
Coulomb
Amp Meter
43. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Frequency
Magnetic Poles
Micro Ohm
Magnetic Pole
44. The number of cycles per second. Example: 60 cycles per second alternating current.
Three -Phase Circuit
Rheostat
Frequency
Alternating Current
45. An alternating current which current cycle begins earlier than its voltage cycle.
Circuit
Factors governing the Value of EMF of a Generator
Leading Current
Parallel Circuit
46. 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
Electron
Cycle
Magnetism
47. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Milliampere
Magnetism
Short Circuit
Artificial Magnet
48. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours
Plates
Horsepower
Bimetallic Strip
Kilowatt Hour
49. Shows relationship between Current - Voltage - Wattage and Resistance.
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50. Total and complete opposition to the flow of electrons
Magnetic Field
Wattmeter
Insulator
Impedance