2 years ago

A voltage _______ is an increase or decrease in the normal line voltage within the range of 5% to -10%.

Engineering

1 answer:

Ainat [17]2 years ago

7 0

A voltage Fluctuation is an increase or decrease in the normal line voltage within the range of 5% to -10%

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The Answer Is C. A collection of computer programs or applications along with its related data
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2 years ago

An R-134a refrigeration system is operating with an evaporator pressure of 200 kPa. The refrigerant is 10% in vapor phase at the

crimeas [40]

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71.17°C

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3 years ago

What is the volicity of a rocket?

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3 years ago

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In order to produce a certain semiconductor, a process called doping is performed in which phosphorus is diffused into germanium

Nimfa-mama [501]

Answer:

The diffusivity is given as $8.064\times 10^{-16} m^2/s$

Explanation:

From the given data as in the attached question found via the search (because the values were not clear in this one)

$D_o=2.0\times10^{-4}m^2/s\\Q_d=240.6 kJ/mol=2.406 \times 10^5 J/mol\\Gas Constant=R=8.314 J/mol K\\Temperature =830 C =830+273 =1103 K$

So the Diffusion coefficient is given as

$D=D_oe^{\frac{-Q_d}{RT}}\\D=(2.0\times 10^{-4})e^{\frac{-2.406\times 10^5}{8.314\times 1103}}\\D=8.0640\times 10^{-16} m^2/s$

So the diffusivity is given as $8.064\times 10^{-16} m^2/s$

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4 years ago

A W18 X 119 is used as a compression member with one end fixed and the other end pinned. The length is 12 feet. What is the desi

laiz [17]

Answer:

156.0 ksi

Explanation:

The formula of compressive strength is CS = F / A

where F is the force or load while A is the cross-sectional area

Given the inertia Ag = 35.1 in^4 , which is less than 40, the steel has a short column.

E = 29000 ksi

L = 12ft

r = 2.69 in

therefore;

CS = π^2 E / (kL^2/r)^2

= π^2 29000 / (0.8 x 12^2 / 2.69)^2

= 286292.756 / 1834.4089 = 156 ksi

3 0

3 years ago