Answer:
The minimum size aluminium equipment grounding conductor required is 4 AWG.
Explanation:
minimum aluminum size = 125/0.8
= 156.25
Therefore, The minimum size aluminium equipment grounding conductor required is 4 AWG.
To solve this problem we will apply the concepts related to real power in 3 phases, which is defined as the product between the phase voltage, the phase current and the power factor (Specifically given by the cosine of the phase angle). First we will find the phase voltage from the given voltage and proceed to find the current by clearing it from the previously mentioned formula. Our values are
Real power in 3 phase
Now the Phase Voltage is,
The current phase would be,
Rearranging,
Replacing,
Therefore the current per phase is 2.26kA
Answer:
T=833.8 °C
Explanation:
Given that
m= 2 kg
T₁=200 °C
time ,t= 10 min = 600 s
Work input = 1 KW
Work input = 1 x 600 KJ=600 KJ
Heat input = 0.5 KW
Q= 05 x 600 = 300 KJ
Gas is ideal gas.
We know that for ideal gas internal energy change given as
ΔU= m Cv ΔT
For air Cv= 0.71 KJ/kgK
From first law of thermodynamics
Q = ΔU +W
Heat input taken as positive and work in put taken as negative.
300 KJ = - 600 KJ + ΔU
ΔU = 900 KJ
ΔU= m Cv ΔT
900 KJ = 2 x 0.71 x (T- 200 )
T=833.8 °C
So the final temperature is T=833.8 °C
A Structural Engineer build bridges, buildings, dams, tunnels, tanks, power plants, transmission line towers and space satellites.
<h3>Who is a Structural Engineer ?</h3>
A Structural Engineer can be defined as a professional who has been trained and licensed to analyze, plan and build different structures such as:
This ultimately implies that, the building of bridges, buildings, dams, tunnels, tanks, power plants, transmission line towers and space satellites are done by Structural Engineers.
Read more on Structural Engineer here: brainly.com/question/18699491
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