1. (a) A temperature control process has a first-order response
with a step response time of 12 seconds. In selecting a temperature
sensor for the control system for the process, for what maximum
value of sensor time-constant would you be looking?
(b) If your requirement is for a sensor suitable for a heavy
industrial application, with a linear characteristic, working in
temperatures up to 300°C, what type of sensor would you recommend?
Draw the symbol for the sensor and show...
The
second line of defence is the specific immune response. What is the
order of response of the wbcs’ involved and what role does each
play? What does each of interleukin I & II, interferon, and MHC
I & II do to play their parts?
This is a Matlab Question
Create MATLAB PROGRAM that can solve First Order Linear
Differential Equation ( 1 example contains condition and the other
does not have condition).
1. ty′ + 2y = t^2 − t + 1, y(1)=12
The correct answer is y(t) = 1/4 t^2 − 1/3 t + 1/2 + 1/12t^2
2. (x-1) dy/dx + 2y = (x+1)^2
The correct answer is y = (x(x+1) / x-1 ) + C(x+1) / x-1
The correct answer is
Z- transformation Questions
Q1: given a difference equation, how do we find unit
step/ impulse response?
Q2: based on Q1, do we need to find transfer function
to get output response y(z)= h(z)x(z)
Q3: is initial condition for input x(z) =0 or is it
given
Example: y(z)+2z^-1 y(1) = x(z) +2zx(1) + x(0)
if given y(1) =1, and x(1) and x(0) not given
do we assume x(1) and x(0) =0?
What is the reaction order with respect to initiator
concentration (e.g. first order, second order, etc.) for each of
the following steps:
a. Initiation
b. Propagation
c. What is the relationship between initiator concentration and
critical chain length?
Aminoheptanoic acid is step polymerized to a polyamide and the
reaction has a second order dependence on the amino acid
concentration. The following rate constants are known: k= 1.0x10-3
kg/(mol min) at 150 °C and k= 2.74x10-2 kg/(mol min) at 180 °C.
a) Write the balanced reaction equation for formation of the
polyamide with molar mass of 12 737 g/mol.
b) Calculate the activation energy E and the collision frequency
factor A for the reaction.
c) What conversion is needed...
For a reaction that is either zero, first, or second order,
which reaction order would leave the most reactant remaining after
the reaction has occurred for an hour? Assume k does not
change.