The transfer function for a P-D controller is________________?
The transfer function for a P-D controller is________________? A. Kc(1+ηD s) B. Kc(1 +1/ηD s) C. Kc ηD s D. Kc/ηD s
Process Control and Instrumentation
Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A0. The model that describes the dynamic variation of temperature of water in the tank with time is given as________________?
Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is…
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K (s + 1)/[2 (2s + 1) (3s + 1)] will have a definite number of loci for variation of K from 0 to ∞. The number of loci is_______________?
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K (s + 1)/[2 (2s + 1) (3s + 1)] will have a definite number of loci for…
Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability ?
Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability ? A. Mercury in glass thermometerB. Alcohol in glass thermometer C. Fused metal (Na or K) in steel thermometer D. Nitrogen in steel thermometer
Working principle of mercury in glass thermometer is__________________?
Working principle of mercury in glass thermometer is__________________? A. Volumetric expansion B. Pressure rise with temperature C. Linear expansion D. None of these
In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?
In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is…
A typical example of a physical system with under damped characteristic is a____________________?
A typical example of a physical system with under damped characteristic is a____________________? A. U-tube manometerB. Spring loaded diaphragm valve C. CSTR with first order reaction D. Thermocouple kept immersed in a liquid filled thermowell
“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?
“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion? A. Bode stability B. Nyquist C. Routh stability D. None of these
In a second order under damped system, the_________________?
In a second order under damped system, the_________________? A. Time required for the response of first reach its ultimate value is called the response timeB. Overshoot (which is a measure of how much the response exceeds the ultimate value) increase…
Which of the following cannot measure a temperature of 1600°C ?
Which of the following cannot measure a temperature of 1600°C ? A. Platinum resistance thermometer B. Thermocouple C. Photo-electric pyrometer D. Radiation pyrometer