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-integral (PI) controller Proportional controller Proportional-derivative(PD)controller Proportional integral-derivative (PID) controller Proportional-integral (PI) controller Proportional controller Proportional-derivative(PD)controller ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase lag of the frequency response of a second order system to a sinusoidal forcing function Approaches 180° asymptotically Is 90° at the most Is 120° Is 30° Approaches 180° asymptotically Is 90° at the most Is 120° Is 30° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a differential pressure flow meter? Flow nozzle Venturimeter Orificemeter Rotameter Flow nozzle Venturimeter Orificemeter Rotameter ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following can not measure a temperature of 1600°C ? Radiation pyrometer Thermocouple Platinum resistance thermometer Photo-electric pyrometer Radiation pyrometer Thermocouple Platinum resistance thermometer Photo-electric pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation pH meter has One cell Two cells No cell Three cells One cell Two cells No cell Three cells ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is 4 1 3 2 4 1 3 2 ANSWER DOWNLOAD EXAMIANS APP
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