Recent content by buildingblocs

1)Yes you are correct, I made that mistake. 2)Here are the cylindrical unit vectors expressed in Cartesian unit vectors. C=Asinθ+Bcosθ D=Acosθ-Bsinθ Unit vectors, therefore A=B=1; C=sinθ+cosθ D=cosθ-sinθ

figure1. In figure1, the generalised variables are q and θ, and there are two masses (mass of the spring is neglected). The active forces are Fa1 = Fspring1 (horizontal direction) and Fa2 = Fweight (vertical direction). Therefore it follows that there should be four parts for the equations of...

I am trying to understand the effect that eliminating the mass m1 (m1 = 0) has on the active forces (Fa). I have gone through a scenario where m1 is taken into consideration (refer to uploaded images). The active force on m1 is from the spring and does not have m1 in the expression (Fs1 =...

Homework Statement Solve ∂v/∂θ and ∂v/∂r. (refer to attached image for equations) Homework Equations Refer to attached image. note that the velocity is expressed in cylindrical coordinates and attention must be paid to the directional unit vectors eθ and eρ.[/B] The Attempt at a Solution...

here is my attempt to get h1 or h2 interms of Δh. Anyone know a cleaner way in doing so?

I am trying to establish a mathematical relationship between heights h1 and h2 (please refer to figure attached) for a manometer whose RHS channel is the shape of a triangle (defined by a base length and the angle theta). I want to be able to calculate the heights h1 and h2 for a given change to...

Hi All, In doing some practice RLC series circuit question, I have been obtaining incorrect values for active and reactive power. The magnitudes I obtain are correct however the sign of the value is not. I have attributed this to obtaining an incorrect argument for the absolute power, or...

Below are the formulas that I am referring to:

I thought the SCR is turned on at the firing angle (α).

Hi all, When considering a half wave SCR rectifier (single phase) with an RL load, the term θ (conductive angle) appears in equations relating to the performance of the circuit. In terms what is physically happening in the circuit, what does θ actually represent?

Hi All, Today I conducted a lab in which we plotted the open circuit voltage (V[oc]) and closed circuit current (I[sc]) versus the excitation current in the rotor (I[x]). From the data (plots are attached to thread), it can be seen that saturation occurs in the V[oc] versus I[x] curve...

I want make a function that will calculate the equivalent resistance of resistor in series. I want the function to compute any number of inputs. i.e [output] = function(r1,r2,r3...rn) . How would I accomplish this in matlab.

thank you

How do I get Matlab to recognise 'e' as the number rather than a variable

%Condition blocks example. reserve = 100; %initial amount in the reservoir allreserve = []; alloutflow = []; for i = 1:20; %perform the following statements 20 times if reserve < 30 lossrate = 0.3; else lossrate = 0.2; end %if reserve... outflow =...