Process Control and Instrumentation

A. Platinum-platinum + rhodium
B. Chromel-Alumel
C. Iron-constantan
D. Copper-constantan

A. – 273° & 80°
B. 0° & 80°
C. 32° & 460°
D. 32° & 80°

A. Teflon
B. Synthetic rubber
C. Bakelite
D. Thick paper

A. Decay ratio = overshoot
B. Decay ratio = (overshoot)2
C. Overshoot increases for increasing damping co-efficient
D. Large damping co-efficient means smaller damping

A. Bimetallic thermometers
B. Thermocouples
C. Thermostats
D. Relays for opening & closing of electrical circuits

A. Atmospheric
B. Absolute
C. Gauge
D. None of these

A. Orsat apparatus
B. Thermal conductivity cell
C. Zirconia probe
D. Chromatograph

A. – 39 and 350
B. – 51 and 439
C. – 79 and 395
D. – 10 and 425

A. For which the output response is bounded for all bounded input
B. Which exhibits an unbounded response to a bounded input
C. Which satisfies the conditions for a servo problem
D. None of these

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. Cannot determine as to how many roots of the characteristics equation have positive real roots