TRANSMISSION AND DISTRIBUTION - Practice Mode

1) Why the disc pin insulators outer surface is made by glazing and bent the sides inward?

To withstand high voltage Not to attract birds to sit on it To offer high mechanical strength Disables continuous water flow in rainy season

Correct Answer: Disables continuous water flow in rainy season

2) Why steel is reinforced in ACSR conductors used for overhead lines?

To minimize the line sag To reduce the line voltage d To increase the tensile strength To increase the current carrying capacity

Correct Answer: To increase the tensile strength

Explanation:

Aluminium conductor steel-reinforced cable (ACSR) is a type of high-capacity, high-strength stranded conductor typically used in overhead power lines. The outer strands are high-purity aluminium, chosen for its good conductivity, low weight, low cost, resistance to corrosion and decent mechanical stress resistance.

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TRANSMISSION AND DISTRIBUTION - Practice Mode

1) Why the disc pin insulators outer surface is made by glazing and bent the sides inward?

2) Why steel is reinforced in ACSR conductors used for overhead lines?

Explanation:

3) Which type of A.C transmission is universally adopted?

4) Which type of line insulator is used for terminating on corner post?

5) What is the reason of keeping binding wire gap too close and very tight in pin insulator?