Process Control and Instrumentation For a feed back control system to be stable, the Bode plots of the corresponding open loop transfer function should monotoni-cally decrease Poles of the closed loop transfer function should lie in the left half of the complex plane Poles of the closed loop transfer function should lie in the right 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 left half of the complex plane Poles of the closed loop transfer function should lie in the right half of the complex plane Roots of the characteristic equation should be real ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is 45° -45° -180° -90° 45° -45° -180° -90° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Degree to which an instrument indicates the changes in measured variable without dynamic error is called its Speed of response Reproducibility Fidielity Static characteristics Speed of response Reproducibility Fidielity Static characteristics ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The __________ of a vapor pressure thermometer is a primary element. None of these Bourdon tube Pointer Bulb None of these Bourdon tube Pointer Bulb ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The frequency at which maximum amplitude ratio is attained is called the __________ frequency. Resonant Natural Corner Cross-over Resonant Natural Corner Cross-over ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury. 700 550 350 250 700 550 350 250 ANSWER DOWNLOAD EXAMIANS APP
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