Process Control and Instrumentation Which of the following thermocouples can measure the maximum temperature? Chromel-alumel Tungsten-molybdenum Iron-constantan Platinum-rhodium Chromel-alumel Tungsten-molybdenum Iron-constantan Platinum-rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Suppose that the gain, time constant and dead time of a process with the following transfer function:Gc(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as 12, 0.4, 0.08 8, 0.6, 0.08 12, 0.6, 0.12 8, 0.6, 0.12 12, 0.4, 0.08 8, 0.6, 0.08 12, 0.6, 0.12 8, 0.6, 0.12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation When the damping co-efficient (ξ) is unity, the system is Underdamped Highly fluctuating Overdamped Critically damped Underdamped Highly fluctuating Overdamped Critically damped ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The function of a transducer is to Convert the primary signal into a more useful quantity, usually an electric impulse Codify/decodify the input signal Amplify the input signal Modify the input signal Convert the primary signal into a more useful quantity, usually an electric impulse Codify/decodify the input signal Amplify the input signal Modify the input signal ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The frequency at which maximum amplitude ratio is attained is called the __________ frequency. Natural Corner Resonant Cross-over Natural Corner Resonant Cross-over ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is an undesirable dynamic characteristic of an instrument? Static error Time lag Dead zone Reproducibility Static error Time lag Dead zone Reproducibility ANSWER DOWNLOAD EXAMIANS APP
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