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Definition of low impedance medium impedance and high impedance?
For instance: A microphone rated at 150 ohms to 300 ohms is considered low impedance. About 600 to 2 000 ohms is medium impedance, and 10 000 ohms or more is high impedance.
What determines acoustic impedance?
Acoustic impedance is determined by the properties of the medium through which sound is traveling, specifically its density and the speed of sound within that medium. Mathematically, it is expressed as the product of the medium's density and the speed of sound: ( Z = \rho \cdot c ), where ( Z ) is the acoustic impedance, ( \rho ) is the density, and ( c ) is the speed of sound. Variations in these properties can affect how sound waves reflect, transmit, or absorb at interfaces between different materials.
What is impedance in waves?
Impedance in waves refers to the measure of how much a medium resists the propagation of a wave through it. In the context of mechanical waves, such as sound, it is defined as the ratio of pressure to particle velocity. In electromagnetic waves, impedance can be characterized by the ratio of electric field to magnetic field strength. Impedance plays a crucial role in determining how waves reflect, transmit, or absorb at boundaries between different media.
What is the characteristic wave impedance for waveguide?
The characteristic wave impedance of a waveguide is defined as the ratio of the electric field (E) to the magnetic field (H) for a propagating electromagnetic wave within the guide. For rectangular waveguides, this impedance can be expressed as ( Z = \frac{E}{H} = \frac{1}{\eta} \sqrt{\frac{1}{\epsilon_r}} ) where (\eta) is the intrinsic impedance of the medium, and (\epsilon_r) is the relative permittivity. The value of the characteristic impedance varies depending on the waveguide's dimensions, operating mode, and the dielectric material used. Generally, it does not correspond directly to free space impedance, which is approximately 377 ohms.
Why is the positron emitter more than beta emitter in medium nuclei?
Electrons being negatively charged will be attracted by the protons within the nucleus and so they come after spending energy against the force of attraction. But positron being positively charged will be repelled by positively charged portons. Hence the energy difference between electron and positron emission in case of beta decay
What are the characteristics of a common emitter amplifier?
There are a number of characteristics found in a common emitter amplifier. Not only are the parameters considered, but also their performance. Characteristics and performance are: voltage gain/ medium; current gain/ medium; power gain/ high; input / output phase relationship/ 180 degrees; input resistance/ medium; and output resistance/ medium.
Definition of low impedance medium impedance and high impedance?
For instance: A microphone rated at 150 ohms to 300 ohms is considered low impedance. About 600 to 2 000 ohms is medium impedance, and 10 000 ohms or more is high impedance.
Are drum triggers high or low impedance?
V-Drums, for instance, have an output of 330 ohms, making them low- medium-impedance.
Definition of low impedancemedium impedance and high impedance?
There is no precise definition, but for instance: A microphone rated at 150 ohms to 300 ohms is considered low impedance. About 600 to 2 000 ohms is medium impedance, and 10 000 ohms or more is high impedance.
Why positron emitter is more than beta emitter in medium nuclie?
Because there is more energy available, and beta+ decay requires an energy contribution, as opposed to beta-.
What is the difference between characteristic impedance and intrinsic impedance?
I believe intrinsic impedance is more tied to the medium, thus is defined in terms of magnetic and electric permeability and electrical conductivity, while characteristic impedance is a "wider" look at the impedance. For example, you can calculate the intrinsic impedance of a 18 awg copper wire, or air, or a vacuum. If you wanted to use coax cable with an 18 awg core, you would be looking at the characteristic impedance, not the intrinsic impedance of the copper that will be carrying the waveform.
What determines acoustic impedance?
Acoustic impedance is determined by the properties of the medium through which sound is traveling, specifically its density and the speed of sound within that medium. Mathematically, it is expressed as the product of the medium's density and the speed of sound: ( Z = \rho \cdot c ), where ( Z ) is the acoustic impedance, ( \rho ) is the density, and ( c ) is the speed of sound. Variations in these properties can affect how sound waves reflect, transmit, or absorb at interfaces between different materials.
What is the physical significance of the impedance?
Impedance may refer to: the ratio of the voltage phasor to the electric current phasor, as in Electrical impedance, a measure of opposition to time-varying electric current in an electric circuit. Characteristic impedance, a measure of opposition to electric current propagation in a transmission line. Impedance matching and Impedance mismatch. Vacuum impedance, a universal constant. Electromagnetic impedance, a constant related to electromagnetic wave propagation in a medium. Mechanical impedance, a measure of opposition to motion of a structure subjected to a force. Acoustic impedance, a constant related to the propagation of sound waves in an acoustic medium. Linear response function, a general way to represent the input-output characteristics of a system. Scroll down to related links and look at an example: "Interconnection of two audio units".
What kind of motion does a sound emitter have?
A sound emitter usually has vibrational motion as it produces sound waves by vibrating or oscillating rapidly. This vibration transfers energy through a medium, such as air or water, which then creates fluctuations in pressure that are perceived as sound by our ears.
What is impedance in waves?
Impedance in waves refers to the measure of how much a medium resists the propagation of a wave through it. In the context of mechanical waves, such as sound, it is defined as the ratio of pressure to particle velocity. In electromagnetic waves, impedance can be characterized by the ratio of electric field to magnetic field strength. Impedance plays a crucial role in determining how waves reflect, transmit, or absorb at boundaries between different media.
What is meant by the terms acoustic impedance and attenuation?
Acoustic impedance is the measurement that indicates how much sound pressure the vibration of molecules at a given frequency is generated. Attenuation refers to the gradual loss in intensity through a medium, such as light and sound in water.
What is the characteristic wave impedance for waveguide?
The characteristic wave impedance of a waveguide is defined as the ratio of the electric field (E) to the magnetic field (H) for a propagating electromagnetic wave within the guide. For rectangular waveguides, this impedance can be expressed as ( Z = \frac{E}{H} = \frac{1}{\eta} \sqrt{\frac{1}{\epsilon_r}} ) where (\eta) is the intrinsic impedance of the medium, and (\epsilon_r) is the relative permittivity. The value of the characteristic impedance varies depending on the waveguide's dimensions, operating mode, and the dielectric material used. Generally, it does not correspond directly to free space impedance, which is approximately 377 ohms.
