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What are the applications of losses in transmission line?
There are no applications for losses, that's why they are called 'losses'!
Need of modulation in communication?
Need for modulation: 1. Length of the antenna for a transmitter is inversly proportional to the frequency of the signal to be transmitted. So we try shift the frequency of the singal for the transmission to higher frequencies. 2. Every transmission of signal in a bandwidth is assigned with a particular frequency which is attained by modulating the signal with the carrier frequency. Different modulation techniques are implemented according to the requirements and compatibilities
What is the frequency limit of copper wire?
The frequency limit of copper wire is generally around 1 GHz for typical applications, but it can vary depending on factors such as wire diameter, insulation type, and the specific application. At higher frequencies, signal loss due to skin effect and dielectric losses increases, which can limit effective transmission. For specialized applications like RF and microwave communications, techniques such as using coaxial cables or twisted pairs can help mitigate these losses. However, for very high frequencies, alternatives like fiber optics are often preferred due to their superior performance.
Why are transformers used to increase the voltage before transmission?
Using a higher voltage reduces power losses during transmission.
To reduce power losses in transmission lines the voltage is made?
Much higher.
Effect of frequency in power loss?
Power loss in a system is directly proportional to frequency; as frequency increases, power loss also increases due to factors such as skin effect and dielectric losses. Higher frequency signals encounter increased resistance in conductors, leading to more power dissipation as heat. This effect is important to consider in high-frequency applications to ensure efficient and reliable operation.
Why there are no losses in DC transmission?
There are losses in d.c. transmission lines, due to their resistance. But there are no reactive losses. So, d.c. transmission lines have less losses in comparison to an equivalent a.c. transmission line.
What are the Advantages of Corona in transmission lines?
Due to corona effect virtually conductor size is increase and therefor resistance in transmission line is decreases.so I2R losses will decreases...
What is DC transmission?
D.C. high-voltage transmission is used over long distances as they have less losses (e.g. undersea cables, because of the proximity of the individual cores have high capacitive losses with a.c.), and there are no frequency synchronisation problems when these are used as d.c. 'links' between countries (e.g. UK/France).
What are the applications of losses in transmission line?
There are no applications for losses, that's why they are called 'losses'!
Why should we separate the core losses?
separation of core losses are necessary to determine core losses at diffrent frequency.........
Why does a 2003 impala transmission loses power?
TRANSMISSION LINE LOSSES
What happens when frequency is increased of transformer?
When the frequency of a transformer is increased, the core losses of the transformer increase due to increased eddy current losses and hysteresis losses. This results in a rise in temperature of the transformer. Additionally, higher frequency can affect the impedance of the transformer and alter the voltage regulation and efficiency.
Why power decreases when the frequency increases?
When frequency increases, power decreases due to the skin effect and proximity effect. These effects cause current to flow closer to the surface of the conductor at higher frequencies, increasing the effective resistance. This increased resistance leads to power losses in the form of heat, reducing the overall power transmitted.
Why the transformer size decreases when frequency increased?
When frequency is increased in a transformer, the core material has less time to magnetize and demagnetize, reducing the core losses. This allows for a smaller core size to achieve the required magnetic coupling. Additionally, higher frequency transformers can use smaller windings due to skin effect, where current tends to flow on the surface of the conductor at higher frequencies, reducing copper losses and allowing for smaller conductors.
Need of modulation in communication?
Need for modulation: 1. Length of the antenna for a transmitter is inversly proportional to the frequency of the signal to be transmitted. So we try shift the frequency of the singal for the transmission to higher frequencies. 2. Every transmission of signal in a bandwidth is assigned with a particular frequency which is attained by modulating the signal with the carrier frequency. Different modulation techniques are implemented according to the requirements and compatibilities
Why is not impractical to power distribution in power DC?
IN DC FOR LOW VOLTAGE HIGH DENSITY OF CURRENT WILL BE THERE SO WE CAN NOT USE THIS FOR BEST PRACTICE FOR TRANSMISSION & ALSO BECOS OF HIGH CURRENT TRANSMISSION LOSSES ARE VERY HIGH ( I2XR) LOSSES, TRANSMISSIN EQUIPMENT FOR DC ARE HIGH COSTIN DC FOR LOW VOLTAGE HIGH DENSITY OF CURRENT WILL BE THERE SO WE CAN NOT USE THIS FOR BEST PRACTICE FOR TRANSMISSION & ALSO BECOS OF HIGH CURRENT TRANSMISSION LOSSES ARE VERY HIGH ( I2XR) LOSSES, TRANSMISSIN EQUIPMENT FOR DC ARE HIGH COSTAnswerThe main reason is that we cannot use transformers to easily and efficiently change the magnitude of DC voltages, and the ability to change voltages is essential for electricity distribution. However, having said that, very high-voltage transmission over exceptionally long distances is often done using DC. This is because DC losses are far lower than AC losses.
