Answer:
Qin = 448.23 kJ
Explanation:
given data
mass m1 = 0.6 kg
volume v1 = 0.1 m³
pressure P1 = P2 = 800 kPa
pressure Pi = 5 MPa
temperature Ti = 500°C
temperature T2 = 250°C
volume V2 = 2V1 = 2 (0.1) = 0.2 m³
solution
we get here some value from steam table
as we get first for initial state at pressure 800 kPA
v1 =
...........1
v1 =
v1 = 0.1667 m³/kg
and u1 = 2004.4 kJ/kg
and
for final state at pressure 800 kPa and temperature 250
u2 = 2715.9 kJ/kg
and
v2 = 0.29321 m³/kg
now we get for stream in supply line that is
hi = 3434.7 kJ/kg
for the preesure 5 MPa and temperature 500
and
now we get mass m2 =
............2
m2 =
m2 = 0.6821 kg
so
now we consider here tank as control system
so that steam cross control surface is
as mass balance
mi = m2-m1
mi = 0.6821 - 0.6
mi = 0.0821 kg
and
now we neglect microscopic for energies
so energy balance is
Qin - W (b) + mihi = m2u2 - m1u1 ............3
Qin - P(V2-V1) + mihi = m2u2 - m1u1
Qin - 800 (0.2-0.1) + 0.082 (3434.7) = 0.6821 × 2715.9 - 0.6 × 2004.4
Qin = 448.23 kJ
Answer:
the top engine commotion. Thyristors are set apart in a few circuits as SCR, which is an acronym for Silicon Controlled Rectifier. A triac is fundamentally the same as a thyristor, with the distinction that it can lead in both bearings.
Explanation:
Answer:
The interpretation including its given question has always been discussed in the following sections on the elaboration.
Explanation:
In engineering, a function or a feature has always been perceived as a particular process, active engagement, or workload a system must perform.
- Generally differentiated consequently throughout the life span of infrastructure projects: Specifications as well as Functional technical specifications.
- Typically the Specifications define the most critical device attributes demanded.
Answer:
The value of critical length = 3.46 mm
The value of volume of fraction of fibers = 0.43
Explanation:
Given data
= 800 M pa
D = 0.017 mm
L = 2.3 mm
= 5500 M pa
= 18 M pa
= 13.5 M pa
(a) Critical fiber length is given by
![L_{c} = \sigma_{f} (\frac{D}{2 \sigma_{c} } )](https://tex.z-dn.net/?f=L_%7Bc%7D%20%3D%20%5Csigma_%7Bf%7D%20%28%5Cfrac%7BD%7D%7B2%20%5Csigma_%7Bc%7D%20%7D%20%29)
Put all the values in above equation we get
![L_{c} =5500 (\frac{0.017}{(2) (13.5)} )](https://tex.z-dn.net/?f=L_%7Bc%7D%20%3D5500%20%28%5Cfrac%7B0.017%7D%7B%282%29%20%2813.5%29%7D%20%29)
mm
This is the value of critical length.
(b).Since this critical length is greater than fiber length Than the volume fraction of fibers is given by
![V_{f} = \frac{\sigma_T - \sigma_m}{\frac{L\sigma_c}{D} - \sigma_m }](https://tex.z-dn.net/?f=V_%7Bf%7D%20%3D%20%5Cfrac%7B%5Csigma_T%20-%20%5Csigma_m%7D%7B%5Cfrac%7BL%5Csigma_c%7D%7BD%7D%20-%20%5Csigma_m%20%7D)
Put all the values in above formula we get
![V_{f} = \frac{800-18}{\frac{(2.3)(13.5)}{0.017} - 18 }](https://tex.z-dn.net/?f=V_%7Bf%7D%20%3D%20%5Cfrac%7B800-18%7D%7B%5Cfrac%7B%282.3%29%2813.5%29%7D%7B0.017%7D%20-%2018%20%7D)
= 0.43
This is the value of volume of fraction of fibers.
Answer: An engineer or a craftsperson
Explanation:
Welding symbols allow the engineer or draftsperson to communicate detailed information about the weld to the welder. In most cases, the welding symbol has an arrow, which points to the location on the drawing where a weld is required. The arrow is attached to a leader line that intersects with a horizontal reference line. The arrow and leader line point to the joint in question, while the weld symbol tells the welder what type of weld to do. If the weld symbol is below the reference line, the weld should be made on the same side as the arrow.