Engineering

Electrical EngineeringQ&A Library15.3 Determine the erection sag and tension of a transmission line at 65°C in still air. The line has a span of 300 m. ACSR conductor has the following data: Area - 240 mm2; overall diameter - 20 mm , weight = 1.0 kg/m; ultimate strength = 8000 kg; coefficient of linear expansion = 18.44 x 10-5mC; modulus of elasticity = 9320 kg/mm2. Also assume radial thickness of ice is 1.0 cm and a wind pressure 40 kg/m2 of projected area and a temperature of -5°C as the worst condition. Ans: 20.76 m; 541.9 kg. Weight of the ice is 910 kg/m3 and factor of safety - 2.0.Question

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: A short 3-φ transmission line with an impedance of (5 + j 20) Ω per phase has sending end and receiv...

A: The resistance and reactance of each conductors are,

Q: A 3-phase line 3 km long delivers 3000 kW at a p.f. 0·8 lagging to a load. The resistance and reacta...

A: Click to see the answer

Q: i Gu Pevse use Modol or mesn 10 A 2 Thearen 2Ω 12 10

A: Let us apply supernode at nodes 1 and 2:

Q: e foll a Onny uruut hind 34%

A: Part (a): Refer to Figure as shown in the part (a) of the given question.According to the Maximum po...

Q: Draw an impedance diagram for the electric power system shown in the figure attached, showing all im...

A: We can obtain the impedance diagram by using below steps: -The base voltage VBG1 on the LV side of T...

Q: What is the time constant for a 47 H inductor in series with a 470 Ω resistor? Part 1. (a) What is ...

A: Given Data: The value of inductor (L) is 47 H.The value of resistance of a resistor (R) is 470 ohms....

Q: Feedback Control of Dynamic Systems (7th edition) - Problem 7.39

A: Hi there!! Since there are four parts in the question, I will be answering only the first two parts....

Q: Find the Thevenin's equivalent of the following circuit looking through ab. 2Ω 2Ω 2 A

A: To find the Thevenin voltage across the terminals a-b.The given circuit is redrawn as shown in Figur...

Q: 2Ω 4Ω 1H3%(t)に0 - 2A

A: When t < 0, the inductor acts as a short circuit. Let us say that current through the inductor is...