Q. For measuring the temperature of a red hot furnace, which is the most suitable instrument ?

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Q. Continuous measurement of specific gravity of a liquid is done by

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Q. Stroboscope is used for the measurement of

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Q. In second order underdamped system,

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Q. Dome temperature of blast furnace stove is most accurately measured by a

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Q. Phase lag of the sinusoidal response of a first order system is

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Q. Continuous measurement of moisture content of paper in paper industry is done by measuring the

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Q. Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

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Q. On-off control which is a special case of proportional control, has a band width of about __________ percent.

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Q. The thermal emf-temperature relationship of most thermocouples is

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Q. Which is the strongest paramagnetic gas?

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Q. In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.

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Q. A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is

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Q. Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an

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Q. For two non-interacting first order systems connected in series, the overall transfer function is the __________ of the individual transfer functions.

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Q. Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury.

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Q. Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.

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Q. Which of the following thermocouples has the least temperature measurement range?

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Q. Change of angle of refraction with composition comprises the working principle of a

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Q. Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?

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