Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is π/12 π/3 π/6 5π/12 π/12 π/3 π/6 5π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing None of these Hydrogen Nitrogen Helium None of these Hydrogen Nitrogen Helium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Process degree of freedom indicates __________ number of controllers to be used. The minimum The maximum Both maximum and the minimum Nothing about the The minimum The maximum Both maximum and the minimum Nothing about the 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° -180° 45° -90° -45° -180° 45° -90° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Gain margin is equal to the Reciprocal of amplitude ratio Gain in P-I controller Amplitude ratio Gain in P controller Reciprocal of amplitude ratio Gain in P-I controller Amplitude ratio Gain in P controller ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The amplitude ratio for the sinusoidal response of a __________ is 1. First order system Second order system Transportation lag None of these First order system Second order system Transportation lag None of these ANSWER DOWNLOAD EXAMIANS APP
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