Process Control and Instrumentation

A. Defined on the basis of melting point of ice and evaporation temperature of water vapor
B. Defined on the basis of melting point of ice and condensation temperature of water vapor
C. Having an interval of 100° between ice point to steam point
D. Both B. and C.

A. < atmospheric
B. > 2 (gauge)
C. 10 (absolute)

A. Has a slower speed of response
B. Can measure higher temperature
C. Can’t measure the temperature of moving objects
D. Is more affected by corrosive atmosphere

A. 2
B. 5
C. 3
D. 1

A. First order system
B. Second order system (overdamped)
C. Multiple first order system
D. Second order system (underdamped)

A. Routh test
B. Root locus methods
C. Frequency response methods
D. None of these

A. Enhancement or attenuation of radiation occurs in the sighting path
B. Object and surrounding are at almost the same temperature
C. Object has varying emissivity
D. Object is transparent

A. -1, -4
B. 1, 4
C. -2, -3
D. 2, 3

A. Set point
B. Load
C. Both A. & B.
D. Neither A. nor B.

A. Guard against corrosive and oxidising action on thermocouple materials
B. Reduce measuring lag
C. Increase the fidelity
D. Increase the sensitivity