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Process Control and Instrumentation

The amplitude ratio for the sinusoidal response of a _____________ is 1?

August 24, 2021March 5, 2019 by admin
The amplitude ratio for the sinusoidal response of a _____________ is 1?

A. First order system
B. Second order system
C. Transportation lag
D. None of these

Categories Process Control and Instrumentation

Which of following error integral is considered as the best criterion in controller settings ?

August 24, 2021March 5, 2019 by admin
Which of following error integral is considered as the best criterion in controller settings ?

A. ∫0 ∞ |e| dt
B. ∫0 ∞ |e2| dt
C. ∫0 ∞ e2 dt
D. None of these

Categories Process Control and Instrumentation

Zirconia probe is used for the continuous measurement of ______________ flue gases going out of the furnace?

August 24, 2021March 5, 2019 by admin
Zirconia probe is used for the continuous measurement of ______________ flue gases going out of the furnace?

A. Oxygen in
B. Carbon dioxide in
C. Carbon monoxide in
D. Temperature of

Categories Process Control and Instrumentation

High temperature of around 2000°C of incandescent gas mantles is measured by a/an __________________?

August 24, 2021March 5, 2019 by admin
High temperature of around 2000°C of incandescent gas mantles is measured by a/an __________________?

A. Specially designed thermocouple
B. Optical pyrometer
C. Radiation pyrometer
D. None of these

Categories Process Control and Instrumentation

____________ is the static characteristics of an instrument?

August 24, 2021March 5, 2019 by admin
____________ is the static characteristics of an instrument?

A. Response
B. Tine lag
C. Drift
D. Dynamic error

Categories Process Control and Instrumentation

Process degree of freedom indicates _______________ number of controllers to be used?

August 24, 2021March 5, 2019 by admin
Process degree of freedom indicates _______________ number of controllers to be used?

A. The maximum
B. The minimum
C. Both maximum and the minimum
D. Nothing about the

Categories Process Control and Instrumentation

Thermal conductivity measurement com-prises the working principle of a_________________?

August 24, 2021March 5, 2019 by admin
Thermal conductivity measurement com-prises the working principle of a_________________?

A. CO2 analyser
B. Polarimeter
C. Spectrometer
D. Chromatograph

Categories Process Control and Instrumentation

Which of the following is a ‘contact’ pyrometer ?

August 24, 2021March 5, 2019 by admin
Which of the following is a ‘contact’ pyrometer ?

A. Resistance pyrometer
B. Optical pyrometer
C. Radiation pyrometer
D. Infra red pyrometer

Categories Process Control and Instrumentation

Which of the following is not a second order instrument ?

August 24, 2021March 5, 2019 by admin
Which of the following is not a second order instrument ?

A. Mercury in glass thermometer with covering
B. Bare mercury in glass thermometer
C. Pressure gauge with one bellow, two tubes and a tank
D. None of these

Categories Process Control and Instrumentation

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

August 24, 2021March 5, 2019 by admin
The _____________ of a vapor pressure thermometer is a functioning element?

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

Categories Process Control and Instrumentation
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