Category: Process Control and Instrumentation

A. Kc(1 + ηis + ηD ). s
B. Kc[1 + (1/ηis) + ηD . s)
C. Kc(1 + ηis + (1/ηD . s)
D. None of these

A. Both real and positive
B. Complex conjugate with positive real parts
C. Both real and negative
D. One real positive and the other real negative

A. Orificemeter
B. Weirs
C. Mouthpieces
D. Notches

A. 50
B. 100
C. 10
D. 1

A. Mercury in glass thermometer
B. Vapor pressure thermometer
C. Resistance thermometer
D. None of these

A. Time taken by the controlled variable to reach 63.2% of its full change
B. Same as transportation lag
C. Same as dead time
D. Time required by the measured variable to reach 63.2% of its ultimate change

A. Thermal conductivity cell
B. X-ray diffraction
C. Mass spectrometer
D. Emission spectrometer

A. Alumel
B. Chromel
C. Constantan
D. None of these

A. Time required for the response of first reach its ultimate value is called the response time
B. Overshoot (which is a measure of how much the response exceeds the ultimate value) increase
with the decrease of damping co-efficient
C. Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of
overshoot
D. None of these

A. Resistance pyrometer
B. Optical pyrometer
C. Radiation pyrometer
D. Infra red pyrometer