Answer:
a) 22.5number
b) 22.22 m length
Explanation:
Given data:
Bridge length = 500 m
width of bridge = 12 m
Maximum temperature = 40 degree C
minimum temperature = - 35 degree C
Maximum expansion can be determined as
where , \alpha is expansion coefficient 
degree C
SO, 
number of minimum expansion joints is calculated as
b) length of each bridge
Answer:
From first law of thermodynamics(energy conservation)
Qa= Qr+W
Qa=Heat added to the engine
Qr=heat rejected from the engine
W=work output from the engine
Second law:
It is impossible to construct a heat engine that will deliver the work with out rejecting heat.
In other word ,if engine take heat then it will reject some amount heat and will deliver some amount of work.
1.
QH=6 kW,
QL=4 kW,
W=2 kW
6 KW= 4 + 2 KW
It satisfy the first law.
Here heat is also rejected from the engine that is why it satisfy second law.
2.
QH=6 kW, QL=0 kW, W=6 kW
This satisfy first law but does not satisfy second law because heat rejection is zero.
3.
QH=6 kW , QL=2 kW, W=5 kW
This does not satisfy first as well as second law.Because summation of heat rejection and work can not be greater than heat addition or we can say that energy is not conserve.
4.
QH=6 kW, QL=6 kW, W=0 kW
This satisfy first law only and does not satisfy second law.
Answer:
with a square cross section and length L that can support an end load of F without yielding. You also wish to minimize the amount the beam deflects under load. What is the free variable(s) (other than the material) for this design problem?
a. End load, F.
b. Length, L.
c. Beam thickness, b
d. Deflection, δ
e. Answers b and c.
f. All of the above.
Answer:
Product Teardown 28 pieces (1) Plastic packaging: protect and display product for purchase. (4) Exterior screws: hold case halves together. (1) Right case half: acts as part of a handle and contains the rest of the parts. (1) Left case half: acts as part of a handle and contains the rest of the parts.
Explanation:
A product teardown process is an orderly way to know about a particular product and identify its parts, system functionality to recognize modeling improvement and identify cost reduction opportunities. Unlike the traditional costing method, tear down analysis collects information to determine product quality and price desired by the consumers.
The rigging device which are used to move loads without the use of slings, but grip the load by biting down and using jaw tension to secure the load, is lifting clamps.
<h3>What are the rigging devices?</h3>
The rigging devices are used to lift the objects and items when the safety is required. This device is used in the industries.
Types of rigging devices
- Rigging hooks-These rigging device is used when the heavy load need to be lift.
- Lifting clamps-Lifting clamp are used to lift the device with jaw tension to secure the load. In this, there is no use of slings.
- Pulley and blocks-In the load is lifts with the help of block and pulley arrangement. This is a widely used rigging device.
Thus, the rigging device which are used to move loads without the use of slings, but grip the load by biting down and using jaw tension to secure the load, is lifting clamps.
Learn more about the rigging devices here;
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