Process Control and Instrumentation In a single tank system, the transfer function of level to inlet flow rate is R/(TS + 1) R/TS 1/TS L(TS + l) R/(TS + 1) R/TS 1/TS L(TS + l) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The open loop transfer function of a control system is KR/(1 + TS) . This represents A second order system A first order system Dead time system A first order time lag A second order system A first order system Dead time system A first order time lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation If response of a control system is to be free of offset and oscillation, the most suitable controller is Proportional integral-derivative (PID) controller Proportional controller Proportional-derivative(PD)controller Proportional-integral (PI) controller Proportional integral-derivative (PID) controller Proportional controller Proportional-derivative(PD)controller Proportional-integral (PI) controller ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by Introducing integral control Reducing value of Kc None of these Introducing derivative control Introducing integral control Reducing value of Kc None of these Introducing derivative control ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is an undesirable dynamic characteristic of an instrument? Reproducibility Time lag Static error Dead zone Reproducibility Time lag Static error Dead zone ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1). W = 1, Kc = 13 W = √(7/8), Kc = 45/4 W = √(7/6), Kc = 46/3 W = 1/√14, Kc = 45/7√14 W = 1, Kc = 13 W = √(7/8), Kc = 45/4 W = √(7/6), Kc = 46/3 W = 1/√14, Kc = 45/7√14 ANSWER DOWNLOAD EXAMIANS APP
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