Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?

Process Control and Instrumentation
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?

O₂

N₂

CO₂

CO

O₂

N₂

CO₂

CO

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Process Control and Instrumentation
Thermocouple is suitable for measuring

Very high temperatures only

Liquid temperatures only

Both high and low temperatures

Very low temperatures only

Very high temperatures only

Liquid temperatures only

Both high and low temperatures

Very low temperatures only

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

Mercury

Carbon-tetrachloride

Water

Methyl alcohal

Mercury

Carbon-tetrachloride

Water

Methyl alcohal

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Platinum-platinum+rhodium

Chromel-alumel

Iron-constantan

None of these

Platinum-platinum+rhodium

Chromel-alumel

Iron-constantan

None of these

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Process Control and Instrumentation
Mercury thermometer can be used to measure the temperature upto __________ °C.

100

250

750

350

100

250

750

350

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Process Control and Instrumentation
Which of the following is not a mechanical pressure sensing element?

U-tube

Diaphragm

Bellows

Bourdon tube

U-tube

Diaphragm

Bellows

Bourdon tube

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Process Control and Instrumentation

Process Control and Instrumentation Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?

Process Control and Instrumentation Thermocouple is suitable for measuring

Process Control and Instrumentation Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

Process Control and Instrumentation Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Process Control and Instrumentation Mercury thermometer can be used to measure the temperature upto __________ °C.

Process Control and Instrumentation Which of the following is not a mechanical pressure sensing element?

Process Control and Instrumentation
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?

Process Control and Instrumentation
Thermocouple is suitable for measuring

Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

Process Control and Instrumentation
Mercury thermometer can be used to measure the temperature upto __________ °C.

Process Control and Instrumentation
Which of the following is not a mechanical pressure sensing element?