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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. A complete sequence of events - as an alternating- current cycle.
Cycle
Magnetic Field
Power
Plates
2. A unit of power.
Series Circuit
Watt
'Crose Phase'
Lines of Force
3. Lines representing the direction of the magnetic force in a magnetic field.
Armature
Magnetic Lines of Force
Series - Parallel Circuit
Milliampere
4. A generator that produces alternating current.
Plates
Ohm's Law
Alternator
Non - Magnetic Material
5. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.
Electromagnet
Voltage Drop
Step- Down Transformer
Electrode
6. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature
Factors Governing Resistance
Milliampere
Conductor
Mega Ohm
7. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.
Micro Volt
Electrolyte
Free Electrons
Shells
8. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.
Current
Frequency
Voltmeter
Magnetism
9. A unit of POWER. 1 kilowatt = 1 -000 watts
Proton
Fuse
Kilowatt
Natural Magnet
10. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.
Resistor
Horsepower
Kilowatt
Natural Magnet
11. One- thousandth of volt.
Voltage Drop
Millivolt
Magnetism
Kilowatt
12. The center portion of an atom which has a positive electrical charge.
Nucleus
Proton
Magnetic Material
Permeability
13. 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.
Magnetic Field
Storage Battery
Voltage Drop
Static Electrical Charge
14. Meter used to measure resistance in an electrical circuit.
Electric Generator
Ohmmeter
Voltmeter
Lines of Force
15. Negative charge of electricity
Parallel Circuit
Electron
Rotor
Ohmmeter
16. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.
Magnetic Pole
Frequency
Alternating Current
Artificial Magnet
17. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.
Three -Phase Circuit
Magnetic Poles
Residual Magnetism
Meter
18. A rate of movement of electrons through a conductor.
Condenser
Volt
Potential Difference
Current
19. The unit of Electro- Motive Force
Free Electrons
Impedance
Series - Parallel Circuit
Volt
20. 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.
Coulomb
Magnetic Field
Series Circuit
Voltmeter
21. 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.
Alternator
Circuit
'Crose Phase'
Alternating Current
22. A material which can be magnetized - principally iron.
Voltage Drop
Magnetic Material
Current
Atom
23. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.
Circuit
Magnetic Field
Series Circuit
Secondary Cell
24. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.
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25. Opposition to current flow
Mega Ohm
Step- Down Transformer
Magnetic Field
Resistance
26. The property of a material that opposes the flow of current.
Resistance
Rotor
Proton
Voltmeter
27. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.
Meter
Permeability
Parallel Circuit
Natural Magnet
28. The area surrounding a magnet in which magnetic properties are exhibited
Lagging Current
Electrolyte
Cycle
Magnetic Field
29. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.
Cycle
Electrode
Magnetism
Molecule
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.
Magnetic Lines of Force
Electromagnetic Induction
Factors governing the Value of EMF of a Generator
Bound Electrons
31. A measuring device.
Electric Generator
Horsepower
Volt
Meter
32. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.
Voltage Drop
Magnetic Material
Electron
Secondary Winding
33. Single POSITIVE electrical charge - located in the middle of an atom.
Molecule
Free Electrons
Proton
Millivolt
34. A resistor designed so that its resistance is readily adjusted.
Rheostat
Resistance
Artificial Magnet
Electron
35. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.
Ohm's Law
Power
Magnetic Poles
Bimetallic Strip
36. The magnetism which a material retains after the magnetic force which magnetized it has been removed.
Residual Magnetism
Mega Ohm
Resistance
Factors Governing Resistance
37. Hardened steel which has been magnetized artificially and which retains its magnetic properties
Primary Winding
Volt
Artificial Magnet
Permanent Magnet
38. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).
Series - Parallel Circuit
Secondary Cell
Secondary Winding
Electrode
39. Shows relationship between Current - Voltage - Wattage and Resistance.
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40. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.
Atom
Current
Micro Volt
Bound Electrons
41. The liquid solution (sometime a paste) in which the electrodes are placed.
Electrolyte
Series Circuit
Electro- Motive Force
Milliampere
42. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.
Horsepower
Magnetism
Rotor
Insulator
43. 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.
Electrical Circuit
Rheostat
Artificial Magnet
Electromagnet
44. A cell which is composed of certain materials which are used up during the process of delivering electric current.
Micro Ampere
Primary Cell
Kilowatt
Factors governing the Value of EMF of a Generator
45. 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.
Bimetallic Strip
Step-Up Transformer
Lagging Current
Plates
46. 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.
Free Electrons
Magnetic Field
Circuit
Volt
47. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.
Micro Ohm
Nucleus
Electric Generator
Magnetic Material
48. 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
Alternating Current
Millivolt
Magnetic Field
49. In a battery - the electrode which takes up the electrons returning from the external circuit.
Primary Cell
Milliampere
Positive Plate
Residual Magnetism
50. Occurs when a stream of electrons are caused to move through a conductor.
Current
Mega Ohm
Secondary Winding
Magnetic Lines of Force