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Which of the following is not the advantage of higher transmission voltage:
  • a)
    Power transfer capability of the transmission line is reduced
  • b)
    Transmission line losses are reduced
  • c)
    Area of cross section and volume of the conductor is reduced
  • d)
    Power transfer capability of the transmission line is increased
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Which of the following is not the advantage of higher transmission vol...
Advantages of higher transmission voltage are:
  1. Power transfer capability of the transmission line is increased
    Pmax = Vs*Vr/Xs
    Where, Vs = Supply voltage
    Vr = Receiving end voltage
    If Vs = Vr,
    Pmax ∝ Vs²
  2. Transmission line losses are reduced
    Power P = VI cosφ
    I = P/(V cosφ)
    Transmission line losses Pl = I²R
    Therefore, Transmission line losses Pl∝ 1/V²
  3. Area of cross section and volume of the conductor is reduced
    Resistance R = ρl/A
    Where, ρ= resistivity
    l = length of the conductor
    A = Area of cross section
    Therefore area A ∝ 1/V²
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Which of the following is not the advantage of higher transmission vol...
Introduction:
Higher transmission voltage is advantageous in electrical power systems for various reasons. It offers several benefits such as reduced transmission line losses, reduced conductor size, and increased power transfer capability. However, one of the options mentioned, "Power transfer capability of the transmission line is reduced," is not an advantage of higher transmission voltage.

Explanation:
Let's analyze each option to understand why option 'A' is the correct answer:

a) Power transfer capability of the transmission line is reduced:
This option is not an advantage of higher transmission voltage. In fact, higher transmission voltage leads to increased power transfer capability. It allows for the transmission of more power over longer distances without significant voltage drops. Higher voltage reduces the line losses, enabling the system to deliver more power efficiently.

b) Transmission line losses are reduced:
Higher transmission voltage significantly reduces the losses in the transmission lines. According to Ohm's law, power losses in a transmission line are directly proportional to the square of the current passing through it. By increasing the transmission voltage, the current can be reduced for the same power transfer, resulting in lower losses.

c) Area of cross section and volume of the conductor is reduced:
With higher transmission voltage, the current required for a given power transfer is reduced. This reduction in current allows for smaller conductor sizes and reduces the cross-sectional area and volume of the conductor. Smaller conductors are cost-effective and easier to install and maintain.

d) Power transfer capability of the transmission line is increased:
This option correctly states the advantage of higher transmission voltage. Increased voltage allows for the transmission of more power through the same transmission line. By reducing the current, higher voltages enable the system to transfer more power efficiently, reducing line losses.

Conclusion:
In summary, higher transmission voltage offers several advantages in electrical power systems, including reduced transmission line losses, reduced conductor size, and increased power transfer capability. The only option that does not align with the advantages of higher transmission voltage is "Power transfer capability of the transmission line is reduced" (option 'A').
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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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Which of the following is not the advantage of higher transmission voltage:a)Power transfer capability of the transmission line is reducedb)Transmission line losses are reducedc)Area of cross section and volume of the conductor is reducedd)Power transfer capability of the transmission line is increasedCorrect answer is option 'A'. Can you explain this answer?
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