Mechanical design of overhead lines
Authored by KEERTHANA S
Education
University
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7 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
What is the purpose of the shield wire in overhead lines?
A. To provide a path for lightning
B. To carry the load
C. To connect the insulators
D. To provide insulation
2.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which type of pole is preferred for transmission lines in urban areas?
A. Steel poles
B. Wooden poles
C. Concrete poles
D. All of the above
3.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which of the following is not a factor that influences the choice of conductor size in overhead lines?
A. Load current
B. Ambient temperature
C. Distance between supports
D. Emissivity of the conductor
4.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
What is the maximum permissible sag for conductors in transmission lines?
A. 10% of the span
B. 15% of the span
C. 20% of the span
D. 25% of the span
5.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which of the following is not a type of vibration experienced by overhead conductors?
A. Aeolian vibration
B. Galloping vibration
C. Earthquake vibration
D. Sub-span oscillation
6.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which type of insulator is used for high voltage transmission lines?
A. Pin-type insulator
B. Suspension insulator
C. Shackle insulator
D. Stay insulator
7.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Which of the following is not a material used for overhead line conductors?
A. Aluminum
B. Copper
C. Steel
D. Zinc
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