Process Control and Instrumentation Questions

• What is the dynamic error in a critically damped second order instrument for a ramp input (At)?
• Which of the following is a 'contact' pyrometer?
• On-off controllers are normally used for
• Pressure of 0.01 psi (absolute) can be measured by __________ gauge.
• For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a
• Pressure of 0.0001 absolute psi can be measured by __________ gauge.
• For the block diagram shown below : The characteristic equation is
• An ideal PID controller has the transfer function . The frequency at which the magnitude ratio of the controller is 1, is
• Continuous measurement of moisture in paper is done by
• The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.
• The response of two tanks of same size and resistance in series is
• An amplitude ratio of 0.1 corresponds to __________ decibels.
• Which of the following is not a speed measuring instrument?
• The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly
• The term analogous to the electrical current in a thermal system is the
• The unit step response of the transfer functionreaches its final steady state assymptotically after
• Positioning controllers are used for
• Which of the following judges the accuracy of an instrument?
• The amplitude ratio for the sinusoidal response of a __________ is 1.
• Paramagnetism method is not used for the composition determination of __________ in gases.