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 90° 0° 180° 45° 90° 0° 180° 45° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is 54 68 12 36 54 68 12 36 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature? Platinum-platinum + rhodium Chromel-alumel Copper-constantan Iron-constantan Platinum-platinum + rhodium Chromel-alumel Copper-constantan Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The transfer function of a pure dead time system with dead time τd is Τds + 1 Eτds E-τds 1/(τds + 1) Τds + 1 Eτds E-τds 1/(τds + 1) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Positioning controllers are used for High loads Low loads Flow rate changes Temperature changes High loads Low loads Flow rate changes Temperature changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The level of a liquid under pressure can be determined using Diaphragm box system Bubbler system Air-trap system Differential pressure manometer Diaphragm box system Bubbler system Air-trap system Differential pressure manometer ANSWER DOWNLOAD EXAMIANS APP
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