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Questions and Answers
What happens to the inductance of a coil as more layers are added?
What happens to the inductance of a coil as more layers are added?
What is the principle behind the operation of a transformer?
What is the principle behind the operation of a transformer?
What is the term for the voltage induced in another electrically isolated conductor when a conductor's magnetic flux changes?
What is the term for the voltage induced in another electrically isolated conductor when a conductor's magnetic flux changes?
What is the primary factor that determines the amount of mutual inductance between two coils?
What is the primary factor that determines the amount of mutual inductance between two coils?
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How do the layers of an inductor coil interact with each other?
How do the layers of an inductor coil interact with each other?
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What is the result of a change in flux in one coil when two coils are magnetically coupled?
What is the result of a change in flux in one coil when two coils are magnetically coupled?
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What is the primary purpose of the material in an inductor core?
What is the primary purpose of the material in an inductor core?
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Which of the following physical factors affects the inductance of a coil?
Which of the following physical factors affects the inductance of a coil?
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How does the inductance of a coil vary with the number of turns?
How does the inductance of a coil vary with the number of turns?
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What is the effect of doubling the number of turns in a coil on the induced voltage?
What is the effect of doubling the number of turns in a coil on the induced voltage?
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What is the term for the flux field set up by one loop cutting another loop in a coil?
What is the term for the flux field set up by one loop cutting another loop in a coil?
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Which of the following is NOT a factor affecting the inductance of a coil?
Which of the following is NOT a factor affecting the inductance of a coil?
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What is the primary reason the magnetic core of Coil B is a better path for magnetic lines of force than the nonmagnetic core of Coil A?
What is the primary reason the magnetic core of Coil B is a better path for magnetic lines of force than the nonmagnetic core of Coil A?
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What occurs when the permeability of the core material increases in a coil?
What occurs when the permeability of the core material increases in a coil?
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Why is Coil A a poor inductor compared to the others?
Why is Coil A a poor inductor compared to the others?
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What is the effect of increasing the number of coil layers on the inductance of a coil?
What is the effect of increasing the number of coil layers on the inductance of a coil?
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What is the primary reason Coil C is more inductive than Coil B?
What is the primary reason Coil C is more inductive than Coil B?
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What is the result of closely spaced turns in a coil?
What is the result of closely spaced turns in a coil?
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Study Notes
Inductor Coils
- In a coil, layering can continue through many layers, and the inductance of the coil increases with each layer added.
- The more inductor coil layers, the greater the inductance of the coil.
Mutual Inductance
- Mutual inductance occurs when a conductor's magnetic flux induces voltage in another electrically isolated conductor.
- Mutual inductance depends on:
- Number of turns in each coil
- Physical size of each coil
- Permeability of each coil
- Position of coils with respect to each other
- A transformer uses the mutual inductance principle.
- Mutual inductance allows energy to be transferred or coupled from one coil to another.
Factors Affecting Coil Inductance
- Several physical factors affect the inductance of a coil, including:
- Number of turns in the coil
- Diameter of the coil
- Coil length
- Type of material used in the core
- Number of layers of winding in the coils
- Inductance depends entirely on the physical construction of the circuit and can be measured only with special laboratory instruments.
Number of Turns
- The number of turns in a coil affects its inductance.
- Doubling the number of turns in the coil will produce a field twice as strong, inducing four times the voltage.
- The inductance varies with the square of the number of turns.
Diameter of Coil
- The diameter of the coil affects its inductance.
- A coil with a soft-iron magnetic core has a higher permeability, resulting in more magnetic lines of force, increasing the inductance.
Number of Coil Layers
- Winding the coil in layers increases its inductance.
- The more layers, the greater the flux linkage, resulting in increased inductance.
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Description
This quiz covers the principles of mutual inductance, including how layering affects inductance and the relationship between magnetic flux and induced voltage. It is a part of the CASA Part 66 training materials.
