Recent content by James FC

Cp=1.5 and Cv equals 1 yeah?

your answers are correct

see attached what I submitted.

Homework Statement see attached, question 8a and b are what I'm attempting. I've also attached the VERY brief course notes that I'm required to work with. I know Tc= 8 seconds from the graph (0.13minutes) Gain set to 4. is PB therefore 100/4=25%? I'm struggling to calculate the ratio of...

Homework Statement I'm having trouble worki out the transfer function of the block. Whats confusing me is the input of O2 input of 50. If that wasn't there I know the transfer function would be Oo/Oi=G/1+GH. Homework EquationsThe Attempt at a Solution

you know anyone whose running with this one? As per usual the course notes are nothing like the TMA Q's: TMA2. Q1) A 5 to 20 bar reverse acting proportional pressure controller has an output of 4 to 20 mA. The set point is 11 bar. Determine: A) the measured value pressure which gives an output...

David J - I got the answer correct when I submitted my work. 6 seconds.

I'm struggling with this. So far I've got 4ma = 5 bar and 20ma=20bar... So, 15ma is equal to 4ma +11ma which is an increase of 68.75%. 68.75% of 5-20bar is 10.3125bar. So, a 15mA signal will give 10.3125 bar if the PB were 100%? I'm not sure how to work in the PB of the controller being 40%

I’m after a little guidance regarding this question: Am I right in thinking that the output will not change with regards to distance velocity lag of 4 seconds, it’s merely delayed?However, once the transfer lag starts (time constant 5 seconds) the output will start moving (exponential curve)...