Process Control and Instrumentation

The thermal emf-temperature relationship of most thermocouples is_________________?

Byadmin March 5, 2019August 24, 2021

The thermal emf-temperature relationship of most thermocouples is_________________?

A. Linear
B. Parabolic
C. Exponential
D. Square root

Process Control and Instrumentation

Which of the following controllers has the least maximum deviation ?

Which of the following controllers has the least maximum deviation ?

A. P-controller
B. P-I controller
C. P-I-D controller
D. P-D controller

Read More Which of the following controllers has the least maximum deviation ?
Process Control and Instrumentation

Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a ________________?

Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a ________________?

A. Magnetic flowmeter
B. Pitot tube
C. Flow nozzle type flowmeter
D. Turbine flowmeter

Read More Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a ________________?
Process Control and Instrumentation

In a single tank system, the transfer function of _____________ to inlet flow rate is 1/(TS+1)?

In a single tank system, the transfer function of _____________ to inlet flow rate is 1/(TS+1)?

A. Outlet flow rate
B. Level
C. Both A. & B.
D. Neither A. nor B.

Read More In a single tank system, the transfer function of _____________ to inlet flow rate is 1/(TS+1)?
Process Control and Instrumentation

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 applied to such a closed loop system, the controlled variable will exhibit__________________?

A. Overdamped response
B. Underdamped response
C. Undamped response
D. Unstable response

Read More 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__________________?
Process Control and Instrumentation

Gas analysis is commonly done using the___________________?

Gas analysis is commonly done using the___________________?

A. Thermal conductivity cell
B. X-ray diffraction
C. Mass spectrometer
D. Emission spectrometer

Read More Gas analysis is commonly done using the___________________?
Process Control and Instrumentation

_______________ thermometer cannot measure sub-zero (< 0° C) temperature ?

_______________ thermometer cannot measure sub-zero (< 0° C) temperature ?

A. Mercury in glass
B. Bimetallic
C. Vapor pressure
D. Resistance

Read More _______________ thermometer cannot measure sub-zero (< 0° C) temperature ?

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