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2 years ago

HOLA COMO ESTAN TODOS

Engineering

1 answer:

ella [17]2 years ago

4 0

Answer:

buenos diaz, coma estas?

Explanation:

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g A steel water pipe has an inner diameter of 12 in. and a wall thickness of 0.25 in. Determine the longitudinal and hoop stress

zvonat [6]

Answer:

a) $\mathbf{\sigma _ 1 = 4800 psi}$

$\mathbf{ \sigma _2 = 0}$

b) $\mathbf{\sigma _ 1 = 6000 psi}$

$\mathbf{ \sigma _2 = 3000 psi}$

Explanation:

Given that:

diameter d = 12 in

thickness t = 0.25 in

the radius = d/2 = 12 / 2 = 6 in

r/t = 6/0.25 = 24

24 > 10

Using the thin wall cylinder formula;

The valve A is opened and the flowing water has a pressure P of 200 psi.

So;

$\sigma_{hoop} = \sigma _ 1 = \frac{Pd}{2t}$

$\sigma_{long} = \sigma _2 = 0$

$\sigma _ 1 = \frac{Pd}{2t} \\ \\ \sigma _ 1 = \frac{200(12)}{2(0.25)}$

$\mathbf{\sigma _ 1 = 4800 psi}$

b)The valve A is closed and the water pressure P is 250 psi.

where P = 250 psi

$\sigma_{hoop} = \sigma _ 1 = \frac{Pd}{2t}$

$\sigma_{long} = \sigma _2 = \frac{Pd}{4t}$

$\sigma _ 1 = \frac{Pd}{2t} \\ \\ \sigma _ 1 = \frac{250*(12)}{2(0.25)}$

$\mathbf{\sigma _ 1 = 6000 psi}$

$\sigma _2 = \frac{Pd}{4t} \\ \\ \sigma _2 = \frac{250(12)}{4(0.25)}$

$\mathbf{ \sigma _2 = 3000 psi}$

The free flow body diagram showing the state of stress on a volume element located on the wall at point B is attached in the diagram below

8 0

3 years ago

Rearrange the formula to make “u” the subject. <br><br> v - u<br> ——— = t<br> a

solong [7]

Answer:

u = v - a * t

Explanation:

v - u

t = ------

v - u = a * t

v - a * t = u

therefore, u = v - a * t

5 0

2 years ago

You receive the bill for servicing your diesel engined car. As a good engineer you immediately notice that one of the items on b

vichka [17]

Answer:

b. spark plugs

Explanation:

Diesel engines are characterized in that the mechanism that activates the explosion of fuel is high pressures, so when the piston reaches the top of the cylinder, the pressure of the air-diessel mixture is so high that it causes the explosion, this It is what generates the power in a diesel engine.

3 0

2 years ago

A rectangular weir is in a rectangular channel 2.9 m wide. The length of the weir is 1.9 m and is centered in the channel. If th

WINSTONCH [101]

Answer:

discharge = 0.310976 m³/s

Explanation:

given data

rectangular channel wide = 2.9 m

length of weir L = 1.9 m

water level H = 0.2 m

solution

we get here discharge that is express as

discharge = $\frac{2}{3} * C_d * L* \sqrt{2g} * H^{\frac{3}{2} }$ ............................1

we consider here Coefficient of discharge Cd = 0.62

put here value we get

discharge = $\frac{2}{3} * 0.62 * 1.9* \sqrt{2*9.8} * 0.2^{\frac{3}{2} }$

discharge = 0.310976 m³/s

3 0

3 years ago

Cd, also called blank______, was the first widely available optical format for pc users.

OleMash [197]

Answer: Compact Disc

8 0

1 year ago