Q. High temperature of around 2000°C of incandescent gas mantles is measured by a/an
✅ Correct Answer: (C)
Radiation pyrometer
Process Control And Instrumentation MCQs | Page - 8
Dear candidates you will find MCQ questions of Process Control And Instrumentation here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.
✅ Correct Answer: (A)
Oxygen in
Q. Which of the following filled system expansion thermometer has the capability to measure the lowest temperature?
✅ Correct Answer: (C)
Alcohol in glass thermometer
Q. A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion.
✅ Correct Answer: (A)
Bode stability
Q. Thermal conductivity measurement is used for the determination of
✅ Correct Answer: (D)
CO2 percentage in the flue gas
Q. Bode diagram are generated from output response of the system subjected to which of the following input?
✅ Correct Answer: (D)
Sinusoidal
Q. Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.
✅ Correct Answer: (C)
Volumetric expansion
Q. Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature
✅ Correct Answer: (D)
Both B and C
Q. A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if
✅ Correct Answer: (B)
Kc is increased
Q. Temperature measuring instruments are standardised mostly with __________ points of pure substances.
✅ Correct Answer: (C)
Both A & B
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