List different transmission line components used for power transmission.

List different transmission line components used for power transmission.
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1 Answer

Answer :

1. Supporting structure (pole)

2. Line insulator

3. Overhead conductor

4. ‘V’ Cross arm

5. Top pin support

6. Two Pin Cross arm

7. Four pin cross arm

8. Stay set (Stay wire of 7/8 or 7/10 SWG)

9. Lighting arrestors

10. Guarding wires

11. Continuous earth wire

12. Cables

13. Fuses and Isolating switches

14. Different types of fabrication Clamp (A-type, B-Type)

15. Bird guards

16. Vibration damper

17. Jumpers 


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Last Answer : D. 112 Ω

Short-circuited stubs are preferred to open-circuited stubs because thelatter are a. more difficult to make an connect b. made of a transmission line with a different characteristic impedance c. liable to radiate

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Last Answer : c. liable to radiate

Transmission efficiency of transmission line increases with the: a) Decrease in power factor and voltage b) Increases in power factor and voltage c) Increase in power factor and decrease in voltage d) Increase in the voltage but decrease in the power factor

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Last Answer : Ans: B

When the current flow in a power transmission line is halved, the power loss _____________. A. is halved B. is doubled C. is divided by four D. remains the same

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When the current in a power transmission line is increased, the power loss _____________. A. increases as the square of the current B. decreases as the square root of the current C. remains the same, as it is independent of current flow D. increases in direct proportion as the current

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When the current flow through a power transmission line is doubled, the power loss _____________. A. is halved B. is doubled C. is quadrupled D. remains the same

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Last Answer : Answer: C

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Last Answer : D. an impedance mismatch between the load and the line.

A coaxial cable has 7dB of reflected power when the input is 5 watts. What is the output of the transmission line? A. 5 watts B. 2.5 watts C. 1.25 watts D. 1 watt

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Last Answer : D. 1 watt