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Lena [83]
3 years ago
15

The water behind Hoover Dam is 206m higher than the Colorado river below it. At what rate must water pass through the hydraulic

turbines of this dam to produce 100 MW of power if the turbines are 100 percent efficient?
Engineering
2 answers:
Alja [10]3 years ago
4 0

Answer:

49.484 m³ / s

Explanation:

Volume flow rate = Power in W / (efficiency × density × height × acceleration due to gravity)

Volume flow rate = 100 × 10⁶ / ( 1 × 1000 kg/m³ × 206 m × 9.81 m/s²)

V = 49.484 m³ / s

Leokris [45]3 years ago
3 0

Answer:

m' = 4948.38 kg/s

Explanation:

For a case of 100% efficiency, the power produced must be equal to the rate of potential energy conversion

GIVEN THAT

Power = 100 MW

rate of Potential energy = (m')*g*h

100*10^6 = (m')*9.81*206

m' = 4948.38 kg/s

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0.3 Ω

Explanation:

Resistance (R) = V/I

R = 1.5/5

R = 15/50

= 3/10

= 0.3Ω

hope it helps :)

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When selecting the appropriate gear for intended direction of travel, automatic transmission equipped vehicles should be placed
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Answer:

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A Sampling of 409 motor Shafts from a very large production Batch shows a sample standard deviation in Diameter of 0.021 mm with
andrezito [222]

Answer:

9.248 < \mu < 9.253 mm

Explanation:

Given data:

standard deviation  = 0.021 mm

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confidence interval level = 95%

mean diameter of entire batch  \mu  = \bar X \pm z \frac{\sigma}{\sqrt{n}}

where

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z = critical value

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\mu = 9.251 \pm 1.96 \times \frac{0.021}{\sqrt{409}}

9.248 < \mu < 9.253 mm

7 0
3 years ago
Describe the basic mechanism by which positive photolithography transfers a pattern, and comment on the chemical interactions of
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Films from both conductors (such as polysilicon, aluminum, and extended recently copper) and nonconductors (various forms of silicon dioxide, silicon nitride, and others) are utilized to combine and separate transistors and their parts.

Selective doping of different regions of silicon permits the conductivity of the silicon to be altered with the application of voltage. By building structures of these various parts millions of transistors can be assembled and wired together to form the complex circuitry of a modern microelectronic device.  

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