If the P.F of load decreases, the line losse...
If the P.F of load decreases, the line losses-
• a)
Increases
• b)
Decreases
• c)
Remain constant
• d)
None of these
If the P.F of load decreases, the line losses-a)Increasesb)Decreasesc...
Taking that the pf of the load is improved ( say from 0.7 lag to 0.85 lag) for the same real power P, then the magnitude of the line current will decrease, decreasing the line losses. So transmission efficiency will improve.
If the P.F of load decreases, the line losses-a)Increasesb)Decreasesc...
Explanation:

When the power factor (PF) of the load decreases, it means that the load is drawing more reactive power compared to the active power. This results in an increase in the line losses.

Line Losses:
Line losses occur due to the resistance and reactance of the transmission lines. These losses are represented by I^2R losses and are proportional to the square of the current flowing through the lines.

Effect of Power Factor on Line Losses:
The power factor affects the current flowing through the lines. When the power factor is low, the current flowing through the lines increases. This increased current leads to higher I^2R losses, resulting in an increase in line losses.

Explanation of Options:
a) Increases: This is the correct answer because as explained above, when the power factor of the load decreases, the line losses increase due to higher current flow.
b) Decreases: This option is incorrect as the line losses increase when the power factor decreases.
c) Remain constant: This option is incorrect as the line losses are directly proportional to the current, which changes with the power factor.
d) None of these: This option is incorrect as the correct answer is option 'A'.

Conclusion:
When the power factor of the load decreases, it results in an increase in line losses. This is because the decrease in power factor leads to an increase in the current flowing through the transmission lines, resulting in higher I^2R losses. Therefore, the correct answer is option 'A' - Increases.
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If the P.F of load decreases, the line losses-a)Increasesb)Decreasesc)Remain constantd)None of theseCorrect answer is option 'A'. Can you explain this answer?
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