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Chemical Engineering - Process Control and Instrumentation

Exercise : Process Control and Instrumentation - Section 3
46.
Which of the following controllers has maximum offset ?
P-controller
P-I controller
P-D controller
P-I-D controller
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Pressure of 0.01 psi (absolute) can be measured by __________ gauge.
ionisation
Pirani
Mcloid
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
High temperature of around 2000°C of incandescent gas mantles is measured by a/an
specially designed thermocouple.
optical pyrometer.
radiation pyrometer.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The unit step response of the transfer function 1/(s2 + 2s + 3)
has a non-zero slope at the origin.
has a damped oscillatory characteristics.
is overdamped
is unstable
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
The experimental response of the controlled variable y(t) for a step change of magnitude P in the manipulated variable x(t) is shown below :

The appropriate transfer function of the process is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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