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. Bode stability Nyquist None of these Routh stability Bode stability Nyquist None of these Routh stability ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A non-linear system will have __________ steady state values. More than one One Two Three More than one One Two Three 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 The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple. Platinum-platinum/rhodium None of these Chromel-alumel Iron-constantan Platinum-platinum/rhodium None of these Chromel-alumel Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the __________ variable. Controlled None of these Load Manipulated Controlled None of these Load Manipulated ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation When a bare thermocouple is covered by a protective sheath, the response becomes Slower and oscillatory Faster and non-oscillatory Slower and non-oscillatory Faster and oscillatory Slower and oscillatory Faster and non-oscillatory Slower and non-oscillatory Faster and oscillatory ANSWER DOWNLOAD EXAMIANS APP
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