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kogti [31]
3 years ago
7

Công dụng của máy cân bánh xe là gì?

Engineering
1 answer:
NNADVOKAT [17]3 years ago
3 0

Answer:

la tuya

Explanation:

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The flat-bed trailer carries two 2000-kg beams with the upper beam secured by a cable. The coefficients of static friction betwe
Lina20 [59]

Answer:

attached below

Explanation:

8 0
3 years ago
The charpy test determines?
Finger [1]

Answer:

The charpy test is used to determine amount of energy a material absorbs at fracture.

Explanation:

Charpy Impact test was developed by a French scientist to determine the amount of energy a material absorbs at fracture hence giving the toughness of the material. It is widely used in industrial applications since it is easy to perform and does not requires sophisticated equipment to perform.

The test is performed when a swinging pendulum of known weight  is dropped from a known height and is made to strike the metal specimen which is notched.The notch in the sample affects the results of the test hence the notch should be standardized while performing the test. The qualitative results obtained can also be used to compare ductility of different materials.

4 0
4 years ago
You have a 12-inch PVC water main that is 850 feet long flowing at 5.6 cfs. Point A is at an elevation of 750 ft. Point B is at
alex41 [277]

Known :

D = 12 in = 1 ft

L = 850 ft

Q = 5.6 cfs

hA = 750 ft

hB = 765 ft

PA = 85 psi = 12240 lb/ft²

Solution :

A = πD² / 4 = π(1²) / 4

A = 0.785 ft²

<u>Velocity of water :</u>

U = Q / A = 5.6 / 0.785

U = 7.134 ft/s

<u>Friction loss due to pipe length :</u>

Re = UD / v = (7.134)(1) / (0.511 × 10^(-5))

Re = 1.4 × 10⁶

(From Moody Chart, We Get f = 0.015)

hf = f(L / d)(U² / 2g) = 0.015(850 / 1)((7.134²) / 2(32.2))

hf = 10 ft

PA + γhA = PB + γhB + γhf

PB = PA + γ(hA - hB - hf)

PB = 12240 + (62.4)(750 - 765 - 10)

PB = 10680 lb/ft²

PB = 74.167 psi

8 0
3 years ago
Help me Pls
cupoosta [38]

Answer:

you got this

Explanation:

try this relax your brain

6 0
3 years ago
Why research and development in Maintenance Engineering?
Dimas [21]

Answer:

The research and development plays an important role in the maintenance engineering is that it basically improve the equipment maintainability and reliability.

According to the requirement, the system and the equipment needs to be maintain in the  maintenance engineering.

The research and the development basically provide the products and services and also improve the existing products and services of the system in the maintenance engineering.

8 0
3 years ago
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