Process Control and Instrumentation For measuring the temperature of a red hot furnace, which is the most suitable instrument? Platinum resistance thermometer Thermocouple Bimetallic thermometer Optical pyrometer Platinum resistance thermometer Thermocouple Bimetallic thermometer Optical pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the dynamic error in a critically damped second order instrument for a ramp input (AT)? √AT 2 AT 1.5 AT 0.5 AT √AT 2 AT 1.5 AT 0.5 AT ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is never used as an element of industrial resistance thermometer? Nickel Copper 30% iron + 70% nickel Lead Nickel Copper 30% iron + 70% nickel Lead ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Suppose that the gain, time constant and dead time of a process with the following transfer function:Gc(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as 8, 0.6, 0.12 8, 0.6, 0.08 12, 0.6, 0.12 12, 0.4, 0.08 8, 0.6, 0.12 8, 0.6, 0.08 12, 0.6, 0.12 12, 0.4, 0.08 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Feed forward controller accounts for the __________ changes. Set point Load Both A & B Neither A nor B Set point Load Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase lag of the frequency response of a second order system to a sinusoidal forcing function Is 30° Is 90° at the most Is 120° Approaches 180° asymptotically Is 30° Is 90° at the most Is 120° Approaches 180° asymptotically ANSWER DOWNLOAD EXAMIANS APP
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