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3 years ago

While discussing the testing of a Hall-effect switch:

Engineering

1 answer:

sergejj [24]3 years ago

6 0

Answer:

your answer is technician A

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BTSAUDY5 NAME STARTS FROM THIS

otez555 [7]

Answer:

What's your question?

Explanation:

I'm not able to understand it....

Sorry.

7 0

3 years ago

Read 2 more answers

What are things that need to be considered with respect to the environment when design and construction is occurring?

Law Incorporation [45]

Answer:

If you are destroying the environment or habitats or trees. Also if people live nearby. Also if its legal.

Explanation:

8 0

3 years ago

1. Sewage-treatment plant, a large concrete tank initially contains 440,000 liters liquid and 10,000 kg fine suspended solids. T

Elenna [48]

Answer:

Concentration = 10.33 kg/m³

Explanation:

We are given;

Mass of solids; 10,000 kg

Volume; V = 440,000 L = 440 m³

Rate at which water is pumped out = 40,000 liter/h

Thus, at the end of 5 hours we amount of water that has been replaced with fresh water is = 40,000 liter/h x 5 hours = 200,000 L = 200 m³

Now, since the tank is perfectly mixed, therefore we can calculate a ratio of fresh water to sewage water as;

200m³/440m³ = 5/11

Thus, the amount left will be calculated by multiplying that ratio by the amount of solids;

Thus,

Amount left; = 10000 x (5/11) = 4545 kg

The concentration would be calculated by:

Concentration = amount left/initial volume

Thus,

Concentration = 4545/440 = 10.3 kg/m³

8 0

3 years ago

Describe How water is tested for color in platinum cobalt method <br>please answer

Vikentia [17]

Answer:

The color of water is measured by comparing the water to platinum cobalt color standards representing APHA Standard Color Units. Tests 0, 20, 50, 80, 110, 140, 170, and 200 APHA color units

Explanation:

4 0

3 years ago

For some metal alloy it is known that the kinetics of recrystallization obey the Avrami equation, and that the value of k in the

JulsSmile [24]

Answer:

t = 1456.8 sec

Explanation:

given data:

contant k = 2.60*10^{-6}

rate of crystallization is 0.0013 s-1

rate of transformation is given by

$r = \frac{1}{t_0.5}$

use specifies value to solve $t_0.5$

it is ime required for 50% tranformation

$r = \frac{1}{.0013}=769.2 sec$

Avrami equation is given by

$y = 1 - e^{-kt^n}$

$0.5 = 1 - e^{-kt_0.5^n}$

$1-0.5 = e^{-kt_0.5^n}$

$ln (1 - 0.5) = -kt_0.5^n$

$ln \frac{ln (1 - 0.5)}{-k} = nln t_0.5$

$n = \frac{ ln \frac{ln (1 - 0.5)}{-k}}{ln t_0.5}$

$n = \frac{ ln \frac{ln (1 - 0.5)}{-2.60*10^{-6}}}{ln 769.2}$

n = 1.88

second degree of recrystalization may be determine by rearranging original avrami equation

$t = [\frac{-ln(1-y)}{k}]^{1/n}$

for 90%completion

$t = [\frac{-ln(1-0.9)}{2.60*10^{-6}}]^{1/1.88}$

t = 1456.8 sec

5 0

3 years ago