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.Management Sciences
Category: Process Control and Instrumentation
Which of the following judges the accuracy of an instrument ?
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A. Dead zone
B. Drift
C. Static error
D. None of these
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
The thermal emf-temperature relationship of most thermocouples is_________________?
A. Linear
B. Parabolic
C. Exponential
D. Square root
Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability ?
A. Mercury in glass thermometer
B. Alcohol in glass thermometer
C. Fused metal (Na or K) in steel thermometer
D. Nitrogen in steel thermometer
Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________?
A. Speed of response
B. Reproducibility
C. Fidelity
D. Static characteristics
Which is the most suitable instrument for measuring pressure below 3 microns ?
A. Mcleod gauge
B. Alphatron
C. Ionisation gauge
D. Bourdon gauge
Change of angle of refraction with composition comprises the working principle of a___________________?
A. Polarimeter
B. Polarograph
C. Spectrometer
D. Refractometer
Working principle of radiation pyrometer is based on the ________________?
A. Wien’s law
B. Kirchoff’s law
C. Stefan-Boltzmann law
D. Seebeck effect
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