Process Control and Instrumentation

Dilatometer is used to measure __________________?

Byadmin March 5, 2019August 24, 2021

Dilatometer is used to measure __________________?

A. Stress
B. Strain
C. Deflection
D. Contraction/expansion due to changes in temperature

Process Control and Instrumentation

______________ is undesirable in thermocouples used in industries ?

______________ is undesirable in thermocouples used in industries ?

A. Linear relation of emf to temperature
B. Corrosion resistance
C. Oxidation resistance
D. Non-linear relation of emf to temperature

Read More ______________ is undesirable in thermocouples used in industries ?
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

A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?

A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?

A. 45°
B. -90°
C. -180°
D. -45°

Read More A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?
Process Control and Instrumentation

Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an___________________?

Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an___________________?

A. Orsat apparatus
B. Thermal conductivity cell
C. Zirconia probe
D. Chromatograph

Read More Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an___________________?
Process Control and Instrumentation

Flow rate of sludge is not measured by a/an_________________?

Flow rate of sludge is not measured by a/an_________________?

A. Orificemeter
B. Open weir
C. Kennison nozzle
D. Both B. & C.

Read More Flow rate of sludge is not measured by a/an_________________?
Process Control and Instrumentation

Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?

Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?

A. 250
B. 350
C. 550
D. 700

Read More Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?

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