Recent content by ilconformista

Thanks a lot!

jim hardy thanks. I get that about power, but the exact thing I don't get is this: How is it possible to have negative torque and positive speed? Because it seems to me that both speed and torque must have the same sign as the "sign" the rotation.

Thanks a lot again. However it still bugs me: If speed is positive, that means that the rotation is clockwise and so the Laplace force is positive and the torque is positive. Similarly if speed is negative then the torque is negative. So I come again to my first question.

Thanks a lot! So the kind of rotation (clockwise or not) is defined by the sign of speed and not by the sign of toque. Is that right?

Hello everyone! In the following speed-torque characteristic of a DC shunt motor, we see that if the speed exceeds a certain value, then the machine becomes a generator. I don't understand something. How is it possible for the machine to have a negative torque and a positive speed...

Thanks a lot! You 've been very helpful!

And in deriving the FD distribution we take in consideration only the 3s electrons right, not the 2s, 2p?

I'm very sorry, I meant Sodium (Na), which has an atomic number 11. So the same questions but for sodium...

Thanks a alot! I'll give you an example to see if i got it right. The core electrons of lithium occupy the energy level E1s. All the other electrons occupy the levels E2s, E2p, E3s. The FD distribution is about all the electrons apart from the ones in E1s? Or only about the ones in E3s?

Hello everyone! I'm a little confused. The Fermi-Dirac distribution is about every electron in a metal or only about the valence electrons?

Hello everyone! In Simulink , I use the Embedded MATLAB Function function out = fcn(meas) if meas>10 out = 4; elseif meas<=0 out=2; end And I get this message: Output argument 'out' is not assigned on some execution paths. I would like the variable 'out' to change its...

rcgldr, thanks four your answer! However I still can't think of any way that these signals are useful. The processor decides first if it's halt, read, write or fetch (by decoding the instruction) and THEN updates the states of S0 and S1. Am I right?

Hello everyone! Could anyone explain to me the following: The 8085AH has 3 state signals: S0, S1 and IO/M*. S0 and S1 provide different type of machine cycles depending on their status. For example if the machine cycle is OpCode Fetch, we will get: S1=S0=1 and IO/M*=0. I don't get it...

Integral, thanks a lot for your answer. In the meantime I found this, which is about a hydraulic system. Except for the fact that practically water can't be compressed, the circuit has the same function as the pneumatic one. I believe the PID controls the flow through the transducer. Is that...

Never mind about the precise values of the three terms. I can't understand which quantity I will control exactly. What will I have as an input? The voltage on the solinoid of the valve? The way I see it is this: The voltage on the solinoid is 230 V for example, which means that the valve allows...