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 Routh stability Nyquist Bode stability None of these Routh stability Nyquist Bode stability ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Mercury thermometer can be used to measure the temperature upto __________ °C. 350 750 100 250 350 750 100 250 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature? Chromel-alumel Copper-constantan Platinum-platinum + rhodium Iron-constantan Chromel-alumel Copper-constantan Platinum-platinum + rhodium Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Pressure of 0.0001 absolute psi can be measured by __________ gauge Pirani None of these Thermocouple Mcloid Pirani None of these Thermocouple Mcloid ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation On-off controllers are normally used for Flow rate changes Low loads None of these Temperature changes Flow rate changes Low loads None of these Temperature changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1). W = 1, Kc = 13 W = √(7/6), Kc = 46/3 W = 1/√14, Kc = 45/7√14 W = √(7/8), Kc = 45/4 W = 1, Kc = 13 W = √(7/6), Kc = 46/3 W = 1/√14, Kc = 45/7√14 W = √(7/8), Kc = 45/4 ANSWER DOWNLOAD EXAMIANS APP
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