Process Control and Instrumentation The inverse Laplace transform of the function f(s) = 1/S(1 + S) is 1 - e-t 1 + e-t 1 - et 1 + et 1 - e-t 1 + e-t 1 - et 1 + et ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is 5π/12 π/3 π/12 π/6 5π/12 π/3 π/12 π/6 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The transfer function of a pure dead time system with dead time τd is E-τds Τds + 1 Eτds 1/(τds + 1) E-τds Τds + 1 Eτds 1/(τds + 1) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature? Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum + rhodium Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum + rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Composition of alloys can be determined by Refractrometer Polarograph None of these Chromatograph Refractrometer Polarograph None of these Chromatograph 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)? 1.5 AT √AT 0.5 AT 2 AT 1.5 AT √AT 0.5 AT 2 AT ANSWER DOWNLOAD EXAMIANS APP
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