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 5π/12 π/6 π/3 π/12 5π/12 π/6 π/3 π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouple materials does not contain nickel? Constantan None of these Chromel Alumel Constantan None of these Chromel Alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called Semi conductors Dielectrics Insulators Conductors Semi conductors Dielectrics Insulators Conductors ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Mercury thermometer can be used to measure the temperature upto __________ °C. 100 250 750 350 100 250 750 350 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The frequency at which maximum amplitude ratio is attained is called the __________ frequency. Natural Cross-over Resonant Corner Natural Cross-over Resonant Corner ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dead zone in an instrument must be less than __________ percent of the scale. 8 1.5 4 0.2 8 1.5 4 0.2 ANSWER DOWNLOAD EXAMIANS APP
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