Process Control and Instrumentation

Thermal wells used in temperature measurements should have __________________?

Byadmin March 5, 2019August 24, 2021

Thermal wells used in temperature measurements should have __________________?

A. Very thick walls
B. Low emissivity
C. Polished surface
D. High transmissivity of radiation

Process Control and Instrumentation

The _____________ of a vapor pressure thermometer is a functioning element?

The _____________ of a vapor pressure thermometer is a functioning element?

A. Pointer
B. Bourdon tube
C. Bulb
D. None of these

Read More The _____________ of a vapor pressure thermometer is a functioning element?
Process Control and Instrumentation

Which of the following instruments is not used for measuring sub-zero (

Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?

A. Platinum resistance thermometer
B. Mercury in glass thermometer
C. Vapor pressure thermometer
D. Radiation pyrometer

Read More Which of the following instruments is not used for measuring sub-zero (
Process Control and Instrumentation

In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?

In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?

A. Coolant
B. Reactants
C. Product
D. None of these

Read More In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?
Process Control and Instrumentation

A system with transfer function [(2S/4S) + 1] is of _____________ order?

A system with transfer function [(2S/4S) + 1] is of _____________ order?

A. Zero
B. 1st
C. 2nd
D. 3rd

Read More A system with transfer function [(2S/4S) + 1] is of _____________ order?
Process Control and Instrumentation

An ideal PID controller has the transfer function [1 + (1/0.55) + 0.25]. The frequency at which the magnitude ratio of the controller is 1, is________________?

An ideal PID controller has the transfer function [1 + (1/0.55) + 0.25]. The frequency at which the magnitude ratio of the controller is 1, is________________?

A. 0.5/0.2
B. 0.2/0.5
C. 0.2 × 0.5
D. 1/√(0.2 × 0.5)

Read More An ideal PID controller has the transfer function [1 + (1/0.55) + 0.25]. The frequency at which the magnitude ratio of the controller is 1, is________________?
Process Control and Instrumentation

A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same_________________?

A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same_________________?

A. Temperature measuring range (- 40°C to 450°C)
B. Accuracy (± 1% of span)
C. Speed of response
D. All a, b & c

Read More A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same_________________?

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