Routh test
A. Criterion provides information about the actual location of roots
B. Cannot be used to test the stability of a control system containing transportation lag
C. Criterion is not applicable to systems with polynomial characteristic equation
D. Can not determine as to how many roots of the characteristics equation have positive real roots
Answer: Option B
This Question Belongs to Chemical Engineering >> Process Control And Instrumentation
Phase lag of the frequency response of a second order system to a sinusoidal forcing function
A. Is 30°
B. Is 90° at the most
C. Approaches 180° asymptotically
D. Is 120°
Which of the following is not classified as a thermo electric pyrometer?
A. Resistance thermometer
B. Thermocouple
C. Optical pyrometer (disappearing filament type)
D. Radiation pyrometer
A. Chromel-alumel
B. Iron-constantan
C. Platinum-platinum/rhodium
D. None of these
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