Process Control and Instrumentation Which of the systems having following transfer functions is stable? 1/(s²+ 2) 1/(s² + 2s + 2) Exp(-20s)/(s² + 2s-l) 1/(s²-2s + 3) 1/(s²+ 2) 1/(s² + 2s + 2) Exp(-20s)/(s² + 2s-l) 1/(s²-2s + 3) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is Iron-constantan Either A, B or C Platinum-platinum+rhodium Chromel-alumel Iron-constantan Either A, B or C Platinum-platinum+rhodium Chromel-alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Routh test Criterion provides information about the actual location of roots Criterion is not applicable to systems with polynomial characteristic equation Cannot be used to test the stability of a control system containing transportation lag Can not determine as to how many roots of the characteristics equation have positive real roots Criterion provides information about the actual location of roots Criterion is not applicable to systems with polynomial characteristic equation Cannot be used to test the stability of a control system containing transportation lag Can not determine as to how many roots of the characteristics equation have positive real roots ANSWER DOWNLOAD EXAMIANS APP
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 π/6 π/12 5π/12 π/3 π/6 π/12 5π/12 π/3 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Mcleoid gauge is used to measure the Vacuum Point velocity Pressure Flow rate Vacuum Point velocity Pressure Flow rate ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The open loop transfer function of a control system is KR/(1 + TS) . This represents A first order system A first order time lag Dead time system A second order system A first order system A first order time lag Dead time system A second order system ANSWER DOWNLOAD EXAMIANS APP
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