Process Control and Instrumentation Time constant is the Time taken by the controlled variable to reach 63.2% of its full change Time required by the measured variable to reach 63.2% of its ultimate change Same as transportation lag Same as dead time Time taken by the controlled variable to reach 63.2% of its full change Time required by the measured variable to reach 63.2% of its ultimate change Same as transportation lag Same as dead time ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Measurement of sub-zero Celcius temperature in industry is done most commonly by Bi-metallic thermometers Thermocouples Gas thermometers Resistance thermometers Bi-metallic thermometers Thermocouples Gas thermometers Resistance thermometers ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Photoelectric pyrometers are suitable in the temperature range of __________ °C. 400-1000 800-2500 400-1600 800-1600 400-1000 800-2500 400-1600 800-1600 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation On-off controllers are normally used for None of these Low loads Flow rate changes Temperature changes None of these Low loads Flow rate changes Temperature changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In second order underdamped system, Large damping co-efficient means smaller damping Decay ratio = (overshoot)² Decay ratio = overshoot Overshoot increases for increasing damping co-efficient Large damping co-efficient means smaller damping Decay ratio = (overshoot)² Decay ratio = overshoot Overshoot increases for increasing damping co-efficient ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples has the widest temperature measurement range? Platinum-platinum/rhodium Copper-constantan Chromel-alumel Iron-constantan Platinum-platinum/rhodium Copper-constantan Chromel-alumel Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
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