Process Control and Instrumentation Time constant is the Time taken by the controlled variable to reach 63.2% of its full change Same as dead time Same as transportation lag Time required by the measured variable to reach 63.2% of its ultimate change Time taken by the controlled variable to reach 63.2% of its full change Same as dead time Same as transportation lag Time required by the measured variable to reach 63.2% of its ultimate change ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Stability of a control system containing a transportation lag can be best analysed by Frequency response methods Root locus methods None of these Routh test Frequency response methods Root locus methods None of these Routh test ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C. - 79 and 395 - 39 and 350 - 51 and 439 - 10 and 425 - 79 and 395 - 39 and 350 - 51 and 439 - 10 and 425 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Presence of a small amount of water in the organic systems can be determined by the __________ method. Electrical conductivity Dielectric constant end loss factor Polarimetry Emission spectroscopy Electrical conductivity Dielectric constant end loss factor Polarimetry Emission spectroscopy ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation 0n-off control which is a special case of proportional control, has a band width of about __________ percent. 75 25 100 75 25 100 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion. None of these Bode stability Nyquist Routh stability None of these Bode stability Nyquist Routh stability ANSWER DOWNLOAD EXAMIANS APP
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