Q. 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 ?

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Q. Emf generated in a thermocouple depends on the temperature

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Q. Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

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Q. A system with a double pole at the origin is unstable since the corresponding term in the time domain

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Q. To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with

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Q. In a second order under damped system, the

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Q. In an exothermic chemical reactor, the manipulated variable is the flow rate of

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Q. Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.

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Q. Which of the following is not a second order instrument ?

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Q. Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is

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Q. Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm³.

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Q. A simple pitot tube measures the

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Q. For a feed back control system to be stable, the

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Q. __________ is the static characteristics of an instrument,

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Q. Phase lag of the frequency response of a second order system to a sinusoidal forcing function

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Q. Dead zone in an instrument must be less than __________ percent of the scale.

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Q. Emission spectroscopy is used for

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Q. A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C.

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Q. __________ controller has the maximum stabilising time.

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Q. Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the

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