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 The transfer function for a P-D controller is Kc(1+τD s) Kc τD s Kc(1 +1/τD s) Kc/τD s Kc(1+τD s) Kc τD s Kc(1 +1/τD s) Kc/τD s ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature. Hydrogen Nitrogen None of these Helium Hydrogen Nitrogen None of these Helium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of radiation pyrometer is based on the Stafan-Boltzman law Seebeck effect Kirchoffs law Wien's law Stafan-Boltzman law Seebeck effect Kirchoffs law Wien's law ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a mechanical pressure sensing element? U-tube Bourdon tube Bellows Diaphragm U-tube Bourdon tube Bellows Diaphragm ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Routh test Can not determine as to how many roots of the characteristics equation have positive real roots Criterion provides information about the actual location of roots Criterion is not applicable to systems with polynomial characteristic equation Cannot be used to test the stability of a control system containing transportation lag Can not determine as to how many roots of the characteristics equation have positive real roots Criterion provides information about the actual location of roots Criterion is not applicable to systems with polynomial characteristic equation Cannot be used to test the stability of a control system containing transportation lag ANSWER DOWNLOAD EXAMIANS APP
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