Process Control and Instrumentation Pick out the one which is a first order instrument. Bare vapor pressure thermometer Mercury in glass thermometer (without any covering or air gap) All of these Bare metallic thermometer Bare vapor pressure thermometer Mercury in glass thermometer (without any covering or air gap) All of these Bare metallic thermometer 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 12, 0.4, 0.08 8, 0.6, 0.08 12, 0.6, 0.12 8, 0.6, 0.12 12, 0.4, 0.08 8, 0.6, 0.08 12, 0.6, 0.12 8, 0.6, 0.12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Routh test Criterion is not applicable to systems with polynomial characteristic equation Criterion provides information about the actual location of roots Can not determine as to how many roots of the characteristics equation have positive real roots Cannot be used to test the stability of a control system containing transportation lag Criterion is not applicable to systems with polynomial characteristic equation Criterion provides information about the actual location of roots Can not determine as to how many roots of the characteristics equation have positive real roots Cannot be used to test the stability of a control system containing transportation lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The initial value (t=0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is 2 1 43832 2 1 43832 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dead zone is the None of these Maximum change in the variable that does not change the reading of the instrument Same as time constant Same as transportation lag None of these Maximum change in the variable that does not change the reading of the instrument Same as time constant Same as transportation lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple? 29 3 13 0.1 29 3 13 0.1 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS