Answer:
10.984mm
Explanation:
by elastic modulus
stress=modulus of elasticity*strain
stress=loading/area area" cross-section"
11mm=0.011m
area=π(d/2)^2=π(0.011/2)^2=9.503*10^-5 square meter
stress=55000/(9.503*10^-5)=578.745 MPa
convert MPa and GPa to pascal.
strain=stress/modulus=(578.745*10^6)/(125*10^9)=0.00463............axial strain
v=Poisson ratio
lateral strain=(-v)*axial strain= -0.31*0.00463
lateral strain= -1.4353*10^-3=change in diameter/ original diameter
change in diameter=(-1.4353*10^-3)*0.011= -1.57883*10^-5 m
negative indicates decrease in diameter.
decrease in dia.=0.01578mm
new diameter=11-0.01578= 10.984mm
Answer: Employees have the right to file a complaint against their employer without having to fear reprisal from their employer's.
Hope this helps! :)
Explanation:
Answer:
- hoop stress
- longitudinal stress
- material used
all this could led to the failure of the garden hose and the tear along the length
Explanation:
For the flow of water to occur in any equipment, water has to flow from a high pressure to a low pressure. considering the pipe, water is flowing at a constant pressure of 30 psi inside the pipe which is assumed to be higher than the allowable operating pressure of the pipe. but the greatest change in pressure will occur at the end of the hose because at that point the water is trying to leave the hose into the atmosphere, therefore the great change in pressure along the length of the hose closest to the end of the hose will cause a tear there. also the other factors that might lead to the failure of the garden hose includes :
hoop stress ( which acts along the circumference of the pipe):
αh = EQUATION 1
and Longitudinal stress ( acting along the length of the pipe )
αl = EQUATION 2
where p = water pressure inside the hose
d = diameter of hose, T = thickness of hose
we can as well attribute the failure of the hose to the material used in making the hose .
assume for a thin cylindrical pipe material used to be
≥ 20
insert this value into equation 1
αh = = 60/2 = 30 psi
the allowable hoop stress was developed by the material which could have also led to the failure of the garden hose
Answer:
Explanation:
The model for the turbine is given by the First Law of Thermodynamics:
The turbine power output is:
The volumetric flow is:
The specific volume of steam at inlet is:
State 1 (Superheated Steam)
The mass flow is:
Specific enthalpies at inlet and outlet are, respectively:
State 1 (Superheated Steam)
State 2 (Saturated Vapor)
The turbine power output is:
Answer:
Explanation:
Given that:
From process 1 → 2
Process 2 → 3
The volume is constant i.e
Process 3 → 1
P = constant i.e the compression from state 1
Now, to start with 1 → 2
The work-done for the process 1 → 2 through adiabatic expansion is:
We know that 1 bar =
∴
For process 2 → 3
Since V is constant
Thus:
W = PΔV = 0
For process 3 → 1
W = PΔV
The net work-done now for the entire system is :
The sketch of the processes on p -V coordinates can be found in the image attached below.