The transfer function for an ideal proportional plus reset controller (reset time T) is

More Questions from Process Control and Instrumentation

• Thermocouple in a thermal well behaves as a true
• Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect.
• Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant)
• According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is
• Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a
• The fluid used in hydraulic controller is
• Feed forward controller accounts for the __________ changes.
• Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C.
• The __________ of a vapor pressure thermometer is a primary element.
• "A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency." This is __________ criterion.

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