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The charging current in a transmission line increases due to corona effect because corona increases
  • a)
    Line current
  • b)
    Effective line voltage
  • c)
    Power loss in lines
  • d)
    The effective conductor diameter
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
The charging current in a transmission line increases due to corona ef...
Answer :

This phenomenon of electric discharge occurring in high voltage transmission lines is known as the corona effect. If the voltage across the lines continues to increase, the glow and hissing noise becomes more and more intense – inducing a high power loss into the system.
26-Oct-2020
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The charging current in a transmission line increases due to corona ef...
Explanation:
Corona effect is a phenomenon that occurs when the voltage gradient on a conductor exceeds a certain threshold, which causes the air surrounding the conductor to ionize and form a corona discharge. The corona discharge creates a current flow between the conductor and the surrounding air, which causes power loss and electromagnetic interference.

The charging current in a transmission line increases due to corona effect because corona increases the effective conductor diameter. This is because the corona discharge creates a sheath of ionized air around the conductor, which effectively increases the diameter of the conductor. As a result, the effective capacitance of the transmission line increases, which causes the charging current to increase.

The other options mentioned in the question are not correct because:

- Line current: Corona effect does not directly increase the line current. However, it can cause power loss, which can indirectly affect the line current.
- Effective line voltage: Corona effect does not directly increase the effective line voltage. However, it can cause voltage fluctuations and electromagnetic interference, which can indirectly affect the effective line voltage.
- Power loss in lines: Corona effect does cause power loss in lines, but it is not the reason for the increase in charging current.

Therefore, option 'D' is the correct answer.
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Community Answer
The charging current in a transmission line increases due to corona ef...
Due to corona the air adjacent to the conductor get ionized due to which it behaves like a conductor due to which effective diameter of conductor is suppossed to be incresed and so is charging current
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it depends on the length of the conductor the capacitance of the line is proportional to the length of the transmission line their effect is negligible on the performance of short having a length less than 80 km and low voltage transmission accidents of the transmission line along with the conductances forms the shunted mittens the conductance and the transmission line is because of the leakage over the surface of the conductor considered a line consisting of two conductors and be each of radius are the distance between the conductors being Des shown in the diagram below minus the potential difference between the conductors and via's work QA charge on conductor QB charge on conductor vvab pencil difference between conductor and the Epsilon minus absolute primitivity QA plus QV = 0 so that QA equals QB - equals DBA equals data equals DB equals our substituting these values and voltage equation we get the capacitance between the conductors is cab is referred to as lying to line capacitance if the two conductors are in VR oppositely charge then the potential difference between them is zero then the potential of each conductor is given by one half bath the capacitance between each conductor and point of zero potential and is capacitive CN is called the capacitance to neut or capacitance to ground capacitance cab is the combination of two equal capacity and VN series thus capacitance to neutral is twice the capacitance between the conductors IE CN equals to Cave the absolute primitivity Epsilon is given by Epsilon equals epsilono Epsilon are where epsilano is the permittivity of the free space and Epsilon or is the relative primitivity of the medium prayer capacitance reactants between one conductor and neutral capacitance of the symmetrical three phase line let a balanced system of voltage be applied to a symmetrical three-phase line shown below the phasor diagram of the three phase line with equilateral spacing is shown below take the voltage of conductor to neutral as a reference phaser the potential difference between conductor and we can be written the similarly potential difference between conductors and sea is on adding equations one and two we get also combining equation three and four from equation 6 and 7 the line to neutral capacitance the capacitance of symmetrical three phase line is same as that of the two wire line Related: Capacitance of Transmission Lines?

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The charging current in a transmission line increases due to corona effect because corona increasesa)Line currentb)Effective line voltagec)Power loss in linesd)The effective conductor diameterCorrect answer is option 'D'. Can you explain this answer?
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