Loading...

Loading, please wait...

GATE trinity
Learning Tool
Prep plan My packages

Practice over 1000+ GATE-level questions from this topic!

Designed to match the latest GATE pattern with topic-wise precision, difficulty tagging, and detailed solutions.

Q#1 GATE CH 2021 MCQ +2 marks -0.66 marks

Which of the following is NOT a necessary condition for a process under closed-loop control to be stable?

Dead-time term(s) must be absent in the open-loop transfer function

Roots of the characteristic equation must have negative real part

All the elements in the left (first) column of the Routh array must have the same sign

Open-loop transfer function must have an amplitude ratio less than 1 at the critical frequency

Sign in to see the solution

Log in to view the explanation, track your attempts, and keep your progress.

Sign in to Unlock
Browse Practice Questions by Chapters / Topics in Browse Practice Questions by Chapters / Topics in GATE Chemical Engineering
Total Questions

Attempted

% Attempted

Correct

% Correct

Topic Questions Attempted Correct
Heat Transfer 26 0 0
Chemical Technology 17 0 0
Mechanical Operations 12 0 0
Mass Transfer 42 0 0
Instrumentation and Process Control 26 0 0
Fluid Mechanics 24 0 0
Engineering Mathematics 41 0 0
General Aptitude 60 0 0
Chemical Reaction Engineering 26 0 0
Process Calculation 9 0 0
Plant Design Economics 10 0 0
Thermodynamics 24 0 0