Process Control and Instrumentation Phase lag of the frequency response of a second order system to a sinusoidal forcing function Approaches 180° asymptotically Is 120° Is 90° at the most Is 30° Approaches 180° asymptotically Is 120° Is 90° at the most Is 30° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Flow rate through an orifice is __________ the pressure differential. 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 Inversely proportional to the square of Proportional to the square root of ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation For a feed back control system to be stable, the Poles of the closed loop transfer function should lie in the left half of the complex plane Roots of the characteristic equation should be real Bode plots of the corresponding open loop transfer function should monotoni-cally decrease Poles of the closed loop transfer function should lie in the right half of the complex plane Poles of the closed loop transfer function should lie in the left half of the complex plane Roots of the characteristic equation should be real Bode plots of the corresponding open loop transfer function should monotoni-cally decrease Poles of the closed loop transfer function should lie in the right half of the complex plane ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal wells are used in the temperature measurement to Increase the sensitivity Guard against corrosive and oxidising action on thermocouple materials Increase the fidelity Reduce measuring lag Increase the sensitivity Guard against corrosive and oxidising action on thermocouple materials Increase the fidelity Reduce measuring lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is 1/√2 0.5 1 0.25 1/√2 0.5 1 0.25 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation __________ controller has the maximum stabilising time. P PD PI PID P PD PI PID ANSWER DOWNLOAD EXAMIANS APP
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