Answer:
At the time of the summer or winter solstices, the Sun is 23.44° degrees above or below the horizon, respectively, irrespective of time of day.
Explanation:
Answer:
LOL where is the question, that u need help with?
Explanation:
Answer:
resistance = 2.52 ohms
Explanation:
from the formula
V =IR
Voltage = (current)(resistance)
Resistance =
R=
R= 2.52 ohms
Answer:
Mechanical Efficiency = 83.51%
Explanation:
Given Data:
Pressure difference = ΔP=1.2 Psi
Flow rate = ![V=8ft^3/s\\](https://tex.z-dn.net/?f=V%3D8ft%5E3%2Fs%5C%5C)
Power of Pump = 3 hp
Required:
Mechanical Efficiency
Solution:
We will first bring the change the units of given data into SI units.
![P=1.2*6.895 = 8.274KPa\\V=8*0.00283=0.226 m^3/s\\P=3*0.746=2.238KW](https://tex.z-dn.net/?f=P%3D1.2%2A6.895%20%3D%208.274KPa%5C%5CV%3D8%2A0.00283%3D0.226%20m%5E3%2Fs%5C%5CP%3D3%2A0.746%3D2.238KW)
Now we will find the change in energy.
Since it is mentioned in the statement that change in elevation (potential energy) and change in velocity (Kinetic Energy) are negligible.
Thus change in energy is
![=(Mass * change in P)/density\\= \frac{M*P}{p}\\\\](https://tex.z-dn.net/?f=%3D%28Mass%20%2A%20change%20in%20P%29%2Fdensity%5C%5C%3D%20%5Cfrac%7BM%2AP%7D%7Bp%7D%5C%5C%5C%5C)
As we know that Mass = Volume x density
substituting the value
Energy = Volume * density x ΔP / density
Change in energy = Volumetric flow x ΔP
Change in energy = 0.226 x 8.274 = 1.869 KW
Now mechanical efficiency = change in energy / work done by shaft
Efficiency = 1.869 / 2.238
Efficiency = 0.8351 = 83.51%
Answer:
transmission bandwidth required is very large.
Explanation: