Process Control and Instrumentation Questions

• Cascade control means
• Meleoid gauge measures the __________ pressure.
• Phase margin is equal to
• Maximum differential pressure in liquid manometer is __________ psi.
• What is the Laplace transform of impulse input having magnitude 'X'?
• Which of the following is not classified as a thermo electric pyrometer?
• Liquid flow rate in an open channel can not be measured by a/an
• Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop.
• Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability?
• Non-metallic diaphragm used as pressure sensor in instruments is generally made of
• Which of the following thermocouples has the widest temperature measurement range?
• Which of the following is not a variable area flow meter?
• With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer
• The unit of 'time constant' of a system is the same as that of
• Pyrometry refers to the measurement of temperature
• Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is
• Pick out the symbol for "locally mounted instrument" in instrumentation diagram.
• Thermocouple is suitable for measuring
• Liquid column manometers are used for measuring the pressure __________ kgf/cm2 .
• Platinum resistance thermometer is the international standard for temperature measurement between