Process Control and Instrumentation According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is 45° 90° 0° 180° 45° 90° 0° 180° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature measurement by optical pyrometer is done above __________ point, which is 1063°C. Gold Antimony Silver Nickel Gold Antimony Silver Nickel 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. Chromel-alumel Platinum-platinum/rhodium None of these Iron-constantan Chromel-alumel Platinum-platinum/rhodium None of these Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Platinum resistance thermometer is the international standard for temperature measurement between Both A and B 13.81°K to 903.9°K Neither A nor B Triple point of hydrogen and freezing point of antimony Both A and B 13.81°K to 903.9°K Neither A nor B Triple point of hydrogen and freezing point of antimony ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple? 0.1 3 13 29 0.1 3 13 29 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The operation of a rotameter is based on Pressure at a stagnation point Variable flow area Pressure drop across a nozzle Rotation of a turbine Pressure at a stagnation point Variable flow area Pressure drop across a nozzle Rotation of a turbine ANSWER DOWNLOAD EXAMIANS APP
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