What is the dynamic error in a critically damped second order instrument for a ramp input (At) ?
Correct answer: B. 2 AT
- A. 0.5 AT
- B. 2 AT
- C. √(AT)
- D. 1.5 AT
Explanation
For a critically damped second-order instrument subjected to a ramp input At, the steady dynamic error is twice the instrument time constant multiplied by the ramp slope, giving 2AT. The factor reflects the lag of the two coincident poles.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Process Control and Instrumentation
254 free Process Control and Instrumentation MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Process Control and Instrumentation questions
Which of the systems having the following transfer function is stable ?
The unit step response of the transfer function 1/(s2 + 2s + 3) _______________________?
Bode stability method uses ____________ loop transfer function?
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is ___________________?
An amplitude ratio of 0.1 corresponds to _____________ decibels?
Transfer function of transportation lag is___________________?