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Which of the following statements are true? a. In overhead lines, inductance is more predominant whereas capacitance is in the cable. b. In overhead lines, capacitance is more predominant whereas inductance is in the cable. c. Cost of cable is high compared to the overhead lines. d. Cost of cable is low compared to overhead lines
One of the most commonly used materials for insulators of an overhead transmission line, i.e. glass, has the drawback (when used as an insulator material) that:
What is the main cause for the failure of overhead line insulators?
Which of the following material is not used for overhead line insulators?
What is the most common cause of failure of overhead line insulators?
Each of the following question and two statements numbered I and II given below it. You have to decide whether the data give in the statements are sufficient to answer the question. Read both the statements and choose the most appropriate answer. How many person standing between Kamal and Luvkush in a straight line of 15 persons (Note: all are standing in a straight line facing north) I) Shiv stands eleventh from the right end of the line. Luvkush stands exactly at the center of the line. There are as many persons to the right of Kamal as there are to the left of Shiv. II) Ram stands fourth from the left end of the line. Shiv sits to the immediate right of Ram.. Only two person stand between Luvkush and Shiv, who is left of Luvkush. Only two person Stand between Kamal and Shiv.
Consider a three-phase. 50 Hz, 11 kV distribution system, Each of the conductors is suspended by an insulator string having two identical porcelain insulators. The self-capacitance of the insulator is 5 times the shunt capacitance between the link and the ground, as shown in the figure. The voltage across the two insulators are
Which of the following statement(s) given below is / are TRUE? A: If there is a line and a point not on the line, then there exists more than one lines though the point that is parallel to the given line. B: If a line is tangent to a circle, it is perpendicular to any chord of the circle drawn to the point of tangency. C: A straight line can be determined by more than two points.
The letters P, Q, R, S, T and U are to be placed one per vertex on a regular convex hexagon, but not necessarily in the same order. Consider the following statements: The line segment joining R and S is longer than the line segment joining P and Q. The line segment joining R and S is perpendicular to the line segment joining P and Q. The line segment joining R and U is parallel to the line segment joining T and Q. Based on the above statements, which one of the following options is CORRECT?
In a plane, line X is perpendicular to line Y and parallel to line Z; line U is perpendicular to both lines V and W; line X is perpendicular to line V. Which one of the following statements is correct?