Chapter 11 OPTICAL PYROMETER MCQs

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1. . The technique which supports the measurement of temperature of the objects without touching them is called as__________ measurement.





2. . In an optical pyrometer to measure the temperature a comparison of__________ is made





3. . In optical pyrometer, the reference temperature is produced by





4. . For an object, its light intensity always depends on the _____________ of the object





5. . The dark filament of the optical pyrometer means the temperature of is_________ the temperature source.





6. . The bright filament of the optical pyrometer mean that it is _________ the temperature source.





7. . At equal brightness between the filament and temperature source, the filament





8. . As the measurement is based on the light intensity, the device can be used only in applications with a minimum temperature of_________.





9. . Radiation Pyrometer can be used for high heat applications and can measure _________between 0.70 microns to 20 microns.





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