Process Control and Instrumentation Which of the following thermocouples can measure the maximum temperature? Iron-constantan Chromel-alumel Platinum-rhodium Tungsten-molybdenum Iron-constantan Chromel-alumel Platinum-rhodium Tungsten-molybdenum ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a composition measuring instrument? Polarograph Mass spectrometer Thermal conductivity cell Hot wire anemometer Polarograph Mass spectrometer Thermal conductivity cell Hot wire anemometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Strain gage pressure transducers are used to measure __________ pressures. Gage as well as vacuum Absolute as well as differential Both A & B Here Neither A nor B Gage as well as vacuum Absolute as well as differential Both A & B Here Neither A nor B 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, 0.08 8, 0.6, 0.12 12, 0.6, 0.12 12, 0.4, 0.08 8, 0.6, 0.08 8, 0.6, 0.12 12, 0.6, 0.12 12, 0.4, 0.08 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion. None of these Routh stability Bode stability Nyquist None of these Routh stability Bode stability Nyquist ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The inverse Laplace transform of the function f(s) = 1/S(1 + S) is 1 - et 1 + e-t 1 - e-t 1 + et 1 - et 1 + e-t 1 - e-t 1 + et ANSWER DOWNLOAD EXAMIANS APP
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