Process Control and Instrumentation A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion. Routh stability Nyquist Bode stability None of these Routh stability Nyquist Bode stability None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Presence of a small amount of water in the organic systems can be determined by the __________ method. Electrical conductivity Emission spectroscopy Polarimetry Dielectric constant end loss factor Electrical conductivity Emission spectroscopy Polarimetry Dielectric constant end loss factor ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Range of hydrogen gas constant volume themometer is __________ °C. 400 - 1000 -10 to 20 0 to 100 100 - 500 400 - 1000 -10 to 20 0 to 100 100 - 500 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple. Platinum-platinum/rhodium Chromel-alumel None of these Iron-constantan Platinum-platinum/rhodium Chromel-alumel None of these Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In second order underdamped system, Decay ratio = (overshoot)² Overshoot increases for increasing damping co-efficient Decay ratio = overshoot Large damping co-efficient means smaller damping Decay ratio = (overshoot)² Overshoot increases for increasing damping co-efficient Decay ratio = overshoot Large damping co-efficient means smaller damping ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples has the least temperature measurement range? Copper-constantan Iron-constantan Platinum-platinum/rhodium Chromel-alumel Copper-constantan Iron-constantan Platinum-platinum/rhodium Chromel-alumel ANSWER DOWNLOAD EXAMIANS APP
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