Process Control and Instrumentation MCQs
Practice free Process Control and Instrumentation multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 317 questions — no login required.
Question 181easy
Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature?
Question 182easy
Dead zone in an instrument must be less than __________ percent of the scale.
Question 183easy
The frequency at which maximum amplitude ratio is attained is called the __________ frequency.
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Question 184easy
In a single tank system, the transfer function of level to inlet flow rate is
Question 185easy
Temperature measuring instruments are standardised mostly with __________ points of pure substances.
Question 186easy
Change of angle of refraction with composition comprises the working principle of a
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Question 187easy
A first order system with unity gain and time constant $$\tau $$ is subjected to a sinusoidal input of frequency $${\text{w}} = \frac{1}{\tau }.$$ The amplitude ratio for this system is
Question 188easy
Which of the following is never used as an element of industrial resistance thermometer?
Question 189easy
To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with