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In theory yes! But how much difference does it make, it depends on the impurities, material, and of course size of the part. Right after filling the mold, the metal is still a fluid, it means the ...

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You have done everything right! You calculated the polar moment of inertia $J$, which is the sum of second moment of areas $I_i$. But here you have a symmetric object so: $$J = I_x+I_y$$ and $$I_x=... View answer 2 answers 0 votes 52 views 0 votes If you only have a general postion vector that describes the path of the object, then it's impossible to derive the velocity vector. Here I try to demonstrate it: Since the point masses are ... View answer 1 answers 0 votes 111 views 2 votes The coordinate transformation of polar to cartesian is given by:$$\begin{pmatrix} r \\ \theta \end{pmatrix} = \begin{pmatrix} \cos\theta & \sin\theta \\ -\sin\theta & \cos\theta \end{pmatrix}...

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As the name suggests, induction motors are inductive, it means they require inductive power input, or reactive power. The problem with reactive power consumption is, if you max the monthly limitation ...

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The whole point of lubrication is to keep the two surfaces almost apart. Water has low viscosity in comparison to oil-based lubricants, which means that it forms a thinner film (electrohydrodynamic ...

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The cold air has a higher density so it always settles down, by installing the AC on top, the cold air can interact faster with hotter air, so the cooling process is much faster. If you install the ...

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What are you searching for is called: Thermostatic expansion valve or (TXV). You have one of those in your air conditioner. Because the compressor of AC's are designed to handel only vapour.

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If you already know the explicit form of the function $f(x)$, then it's possible to find the periode by solving this equation $f(x) = f(x+P)$. If you have a graphical representation of the function (...

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The answer is you have more variables than the equations, look at the general form of the problem: We have in total five unknowns here and two equations of equilibrium: $$y-z-x=0$$ $$-z(d+e)+yd=0$$...

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There are multiple ways to solve this problem but I use the moment equilibrium around the points A and B. $$A_y 3l-q_0 4l^2=0$$ You can find the $A_y$ reaction force from the equation above and use ...

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But if we assume the motor starts from zero RPM, at what speed does the field rotate at this moment in time? The synchronous speed (rotating field speed) $\Omega_{sy}$ is independent of the rotor ...

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This is a statically indeterminate problem. I don't know what exactly you mean by moments develop at the fixed supports But I guess you mean if there exist any non-zero components of moment at the ...

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There exist three types of axial plunger pumps. 1- Rotating swash plate axiale plunger piston pumps: Usually for low-power systems, as the temperature rises above 120° C, it can degrade the fluid ...

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It’s difficult to say when we should select the rolling element bearing or the other one, sometimes we have to consider the upsides and downsides of each to decide. Also the working condition and the ...

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Step one: Choose a right handed coordinate system. As you can see in my schematic: The $X$ axis lies along the beam: So, in $ZX$ plane, the counterclockwise moment is positive. Step 2: ...

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This is possible! The AC motors are designed to run with AC currents so this is not a very good idea. A very popular way to do it is PWM, it basically mimics a sin wave by switching between two states,...

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There are two masses here to accelerate, the target $10$ kg and the mass of the belt which is yet unknown(usually it is given as weight per meter), the total mass is $M$. I make some assumptions here:...

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As stated before in the comments, natural and political challenges let you down to follow this project but electrical engineers and providers face another challenge, look the graph here onder: the ...

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The $\frac{4}{s}$ is a current source so it's open when you calculate the Thévenin equivalent, so no current flows thorough the 3 Ohm resistor however $\frac{12}{s}$ is a voltage source so it's a ...

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The plots are correct. This is how we do it on our heads in about a minute after years of practice. The magnitude: Consider the numerator and denominator separately. Numerator rise with a slope of \$...

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I try to tackel the problem in two different ways, as suggested in the comments. The first approach is based on Bernoulli beam theory, a set of differential equations, (if you want to know how drive ...

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The steady state refers to any phenomenon that is independent of time. Mathematically it means: $$\frac{\partial v}{\partial t} =0$$. Here is an example: Consider a fixed point in the atmosphere ...

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In general an infinite number of functions satisfy differential equations (DV). To obtain a specific solution a first order ODE must have an initial condition or constraint that specifies the value of ...

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There are many reasons behind, and many ways to justify why it is so. I'm trying to clarify it by using the conservation of the mass. 1- The density of the rolling material doesn't change, so its ...

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Those short parallel lines have absolutely no meaning in terms of information relating to the part, but we put them on the drawing to identify the line of symmetry. They are always at the right angles ...

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First you need to get rid of the leftover cups and cones by grinding it to have a smooth surface. To get the best result you have to choose the same material but if you don't know the exact ...

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There are tons of advantages and disadvantages, but I will mention only the relevant cons and pros. Indirect (belt) drive usually produces less noise in comparison to direct drive (continue power ...

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