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Practice Process Measurements and Instrumentation - Instrumentation and Process Control - Chemical Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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| Paper name | Year | Attempt | |
|---|---|---|---|
Chemical Engineering (CH) 20262026 | 2026 |
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Chemical Engineering (CH) 20212021 | 2021 | |
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Chemical Engineering (CH) 20202020 | 2020 | |
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Chemical Engineering (CH) 20192019 | 2019 | |
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Chemical Engineering (CH) 20172017 | 2017 | |
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Chemical Engineering (CH) 20162016 | 2016 | |
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Chemical Engineering (CH) 20132013 | 2013 | |
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Chemical Engineering (CH) 20122012 | 2012 | |
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Chemical Engineering (CH) 20112011 | 2011 | |
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Chemical Engineering (CH) 20102010 | 2010 | |
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Chemical Engineering (CH) 20092009 | 2009 | |
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Chemical Engineering (CH) 20072007 | 2007 | |
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Practice every matching question in batches of 20, with every available option.
An operator was told to control the temperature of a reactor at 60 °C. The operator set the set-point of the temperature controller at 60. The scale actually indicated 0 to 100% of a temperature range of 0 to 200 °C. This caused a runaway reaction by over-pressurizing the vessel, which resulted in injury to the operator. The actual set-point temperature was
The bias values for the two controllers, so that no offset occurs in either controller are
Flow measuring instruments with different specifications (zero and span) are available for an application that requires flow rate measurements in the range of 300 litres/h to 400 litres/h. The appropriate instrument for this application is the ONE whose specifications are
| GROUP I | GROUP II |
|---|---|
| P. Flame temperature Q. Composition of LPG R. Liquid air temperature | I. Thermocouple II. Radiation pyrometer III. Gas chromatograph |
The range of standard current signal in process instruments is 4 to 20 mA. Which ONE of the following is the reason for choosing the minimum signal as 4 mA instead of 0 mA?
A thermocouple having a linear relationship between 0 °C and 350 °C shows an emf of zero and 30.5 mV, respectively at these two temperatures. If the cold junction temperature is shifted from 0 °C to 30 °C, then the emf correction (in mV) is
Match the following.
| Group 1 | Group 2 |
|---|---|
| (P) Viscosity | (1) Pyrometer |
| (Q) Pressure | (2) Hot wire anemometer |
| (R) Velocity | (3) Rheometer |
| (S) Temperature | (4) Piezoelectric element |
| Group-1 | Group-2 |
|---|---|
| P Conductivity meter | I Flow |
| Q Turbine meter | II Pressure |
| R Piezoresistivity element | III Composition |
Match the variables in Group-1 with the instruments in Group-2.
| Group-1 | Group-2 |
|---|---|
| P) Temperature | I) Capacitance probe |
| Q) Liquid level | II) McLeod gauge |
| R) Vacuum | III) Chromatograph |
| S) Concentration | IV) Thermistor |
An LVDT (Linear Variable Differential Transformer) is a transducer used for converting
Which of the following is NOT a standard to transmit measurement and control signals?
Showing 20 of 23 questions