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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Q. Stalagmometer is used for the measurement of

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Q. The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to

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