Process Control and Instrumentation Stability of a control system containing a transportation lag can be best analysed by Root locus methods Frequency response methods None of these Routh test Root locus methods Frequency response methods None of these Routh test ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Flow rate through an orifice is __________ the pressure differential. Inversely proportional to the square of Proportional to the square root of Inversely proportional to the square root of Proportional to Inversely proportional to the square of Proportional to the square root of Inversely proportional to the square root of Proportional to ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Instrumentation in a plant offers the advantage of Greater operation economy All of these Better quality of product Greater safety of operation Greater operation economy All of these Better quality of product Greater safety of operation 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 90° at the most Approaches 180° asymptotically Is 30° Is 120° Is 90° at the most Approaches 180° asymptotically Is 30° Is 120° 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, 0.6, 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 8, 0.6, 0.08 8, 0.6, 0.12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to D⁴ D³ D D² D⁴ D³ D D² ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS