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What are the types of polarization?
electronic polarization ionic or atomic polarization orientation or dipole polarization space charge polarization
What is frequency reserved for 3khz to 300khz for radio wave and microwave?
The frequency range reserved for radio waves is typically below 3 kHz, while the microwave frequency range starts from about 300 MHz (not kHz) and extends to 300 GHz. Within this range, different applications and technologies utilize specific frequency bands to ensure efficient and interference-free communication.
What is alpha cut of frequency?
it is the frequency at which the current amplification drops 3dB below its low frequency value.
What does commulative frequency means?
Cumulative frequency refers to the running total of frequencies in a frequency distribution. It shows the number of observations that fall below a certain value in a data set. Each cumulative frequency is the sum of the corresponding frequency and all frequencies below it.
What is cross-polarization?
AnswerIn RF communications, there are basically 3 common polarizations. They are horizontal polarization, vertical polarization, and circular polarization. Use the link below on antenna theory and see some examples and gather more information.Basically, polarization describes how the E-field is moving when it leaves the antenna.In horizontal polarization the signal moves in a horizontal fashion (-).In vertical polarization the signal moves in a vertical fashion (|).In circular polarization the signal moves in a circular fashion (O) with either left-handed or right-handed rotation.Now, when you want to talk to someone using horizontal or vertical polarization you want to match their angle of polarization exactly for the strongest signal.Cross-polarization is radiation orthogonal to the desired polarization. For instance, the cross-polarization of a vertically polarized antenna is the horizontally polarized fields.This is important to know because when you are setting up something like a satellite connection. In order to allow more signals through the satellite transponder within a fixed bandwidth and with decreased interference, the satellite makers alternate the polarization between adjacent transponder channels. (-|-|-|-|-|-|). Two adjacent channels can be "shoved right up against each other" and will interfere in a minimal way if they are polarized oppositely. Since interference affects their customers, satellite vendors are very touchy about proper polarization, and monitor gaps, called "guard bands" to ensure that you are properly aligned.
What happens to electrons if photon frequency is below threshold?
If the photon frequency is below the threshold frequency, the electrons do not have enough energy to be emitted from the material's surface, and no photoelectric effect occurs. The electrons will not be ejected and will remain bound to the material.
What does it mean by 'above and below resonance?
'Above resonance' means a frequency higher than the resonant frequency of a system, while 'below resonance' means a frequency lower than the resonant frequency. At resonance, a system vibrates with maximum amplitude, making these concepts important in understanding the behavior of vibrating systems like simple harmonic oscillators.
Are heat pumps efficient below 30 degrees?
The new generation of heat pumps are efficient below thirty. Just make sure the one you buy is designed for your climate.
What is polarization index?
Polarization Index is an indicator which gives an idea of the cleanliness of the windings. It is a ratio of the Insulation Resistance Measured for 10 minutes to the insulation resistance value measured after 1 minute. Since it is a ratio; it does not have any units.Polarization Ratio = Insulation Resistance after 10 minutes/ Insulation Resistance after 1 minuteThe Polarization Index should be above 2.0 to be permissible. Machines having PI below 2.0 cannot be operated. The Polarization Index does not have any significant relation with temperature upto 50 deg. C. However, the Polarization Index test should not be conducted at a temperature beyond 50 deg. C
What is RF coil?
RF (Radio Frequency Coil) is a coil, which is designed to resonate at a frequency some where in the radio spectrum frequency. See L C Circuit Link Below.
What is the frequency in hertz of 103 MHz?
That is the frequency of the G Sharp/A flat two octaves below middle C (great octave).
An economy working below its most efficient production levels?
An economy working below its most efficient production levels points inside the production possibilities frontier. This is in the context of a production possibilities curve.
