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hichkok12 [17]
4 years ago
8

1. A 260 ft (79.25 m) length of size 4 AWG uncoated copper wire operating at a tem-

Engineering
1 answer:
Murljashka [212]4 years ago
5 0

A 260 ft (79.25m) length of size 4 AWG uncoated copper wire operating at a temperature of 75°c has a resistance of 0.0792 ohm.

Explanation:

From the given data the area of size 4 AWG of the code is 21.2 mm², then K is the Resistivity of the material at 75°c is taken as ( 0.0214 ohm mm²/m ).

To find the resistance of 260 ft (79.25 m) of size 4 AWG,

R= K * L/ A

K = 0.0214 ohm mm²/m

L = 79.25 m

A = 21.2 mm²

R = 0.0214 * \frac{79.25}{21.2}

  = 0.0214 * 3.738

  = 0.0792 ohm.

Thus the resistance of uncoated copper wire is 0.0792 ohm

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Relevance of engineering law and ethic in contemporary society​
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Answer:

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4 years ago
The useful work potential of energy is called: a. Exergy b. Power c.Equilibrium d. Reversible work
tia_tia [17]

Answer:

a) Exergy

Explanation:

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3 years ago
Select the correct answer from each drop-down menu.
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4 years ago
A second inventor was driving down the highway in her Prius one day with her hand out the window. She happened to be driving thr
Eva8 [605]

Answer:

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Regenerative braking uses an electric generator connected to the wheel axle to recover part of the kinetic energy eliminated when one brakes the vehicle. Normal brakes dissipate this energy as heat, a regenerative brake uses it to recharge a batttery. Note that is is a fraction of the energy that is recovered, not all of it.

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3 years ago
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natali 33 [55]

Answer:

C. The Employer

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