With the increase in voltage level of the distribution network, the weight and corresponding cost of the conductor material will be ______ and ______, respectively, for the same voltage drop.

Effect of Voltage Level on Conductor Material Weight and Cost:

In an electrical distribution network, increasing the voltage level has a significant impact on the weight and cost of the conductor material required for the same power transmission. This can be explained by considering the relationship between voltage, current, and conductor size:

• Higher Voltage Level: When the voltage level of the distribution network is increased, the current required to transmit the same amount of power decreases (since power P = VI).
• Current and Conductor Size: A lower current means that the conductor size can be reduced because the cross-sectional area of the conductor is directly related to the current it needs to carry. A smaller conductor size results in a reduction in the weight of the conductor material.
• Cost of Conductor Material: Since the weight of the conductor material decreases, the cost of the conductor material also decreases.

Therefore, with the increase in the voltage level of the distribution network, the weight and corresponding cost of the conductor material will be decreased and decreased, respectively, for the same voltage drop.

Conclusion:

The correct answer is: 2) decreased; decreased