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What is the effect of frequency change on transmission losses?
Wiki User
∙ 14y ago
Higher the frequency, higher the losses.
Wiki User
∙ 14y ago
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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
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.
What is the significant relationship of the no load loss in excitation current test in transformer?
The no load losses are the losses caused by energizing the transformer. These are constant losses, regardless of loading. This in effect tells you the efficiency of the transformer. (Power in) - (no load losses) = (Power out)
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
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 happens when Electrical Frequency above the rated Frequency is given to an electrical Machine?
failure of generation and cause losses
Why you use ac current of home instead of dc?
alternating current is generally instantaneous in nature and even in transmission lines it is easy to transmit with less losses when compared to dc as because it possess frequency where as dc do not have
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.
In India why ac supply frequency is 50 hertz?
The frequency of 50 Hertz (or 60 Hertz in other countries) was selected to reduce inductive power losses caused by long distance power line transmission and still enable alternating current to be converted to various voltages and currents using moderate sized transformers at the point of power use. The higher the power frequency the higher the inductive losses over a length of power transmission line. For this reason frequencies higher than 60 Hertz are avoided. Where possible electrical power transmission over long distances these days is accomplished with high voltage direct current, which is converted to alternating current near the usage areas.
Can controlling frequency and severity of loss events reduce risks?
Yes, controlling frequency and severity of losses reduces overall loss.
