40 TOP PROCESS CONTROL and INSTRUMENTATION Online Test – Multiple Choice Questions and Answers Posted on April 16, 2024April 16, 2024 by engineer1 Comment 1. Which of the following is a ‘contact’ pyrometer ? optical pyrometer radiation pyrometer resistance pyrometer infra red pyrometer 2. The term analogous to the electrical current in a thermal system is the temperature difference heat flow rate heat content in the system none of these 3. Starting temperature of optical radiation pyrometer is __________ °C 400 800 1200 1500 4. The temperature range for which copper resistance thermometer can be used is __________ °C 0 to 150 350 to 750 500 to 900 -200 to 150 5. An amplitude ratio of 0.1 corresponds to __________ decibels -10 -20 10 20 6. A mercury barometer measures the __________ pressure atmospheric absolute vacuum gauge 7. Pressure of 0.0001 absolute psi can be measured by __________ gauge thermocouple Pirani Mcloid none of these 8. The response of two tanks of same size and resistance in series is over damped critically damped under damped none of the above 9. Continuous measurement of moisture in paper is done by high resistance Wheatstone’s bridge circuit sling psychrometer hair-hygrometer weighing 10. The amplitude ratio for the sinusoidal response of __________ is < 1 first order system second order system transportation lag none of these Loading … Question 1 of 10
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