A. Hot blast (air) from stoves
B. Molten slag flowing out of blast furnace
C. Combustion space in boilers
D. Rotary limestone calcination kiln
Related Mcqs:
- Starting temperature of optical radiation pyrometer is ______________ °C?
A. 800
B. 400
C. 1200
D. 1500 - Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?
A. Enhancement or attenuation of radiation occurs in the sighting path
B. Object and surrounding are at almost the same temperature
C. Object has varying emissivity
D. Object is transparent - Temperature measurement by optical pyrometer is done above ____________ point, which is 1063°C ?
A. Antimony
B. Gold
C. Silver
D. Nickel - Working principle of disappearing filament type optical pyrometer is based on the ________________?
A. Wien’s law
B. Seebeck effect
C. Kirchoff’s law
D. Peltier effect - Working principle of radiation pyrometer is based on the ________________?
A. Wien’s law
B. Kirchoff’s law
C. Stefan-Boltzmann law
D. Seebeck effect - Working principle of radiation pyrometer is based on the __________________?
A. Wien’s law
B. Kirchoff’s law
C. Stefan Boltzmann law
D. Seebeck effect - Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an _____________ pyrometer?
A. Radiation
B. Optical
C. Photoelectric
D. None of these - Radiation thermometer cannot measure the temperature ___________________?
A. Inside a pressure vessel
B. Of an object without coming in contact with it
C. Of liquid oxygen
D. Of moving objects at high temperature - Which of the following is a ‘contact’ pyrometer ?
A. Resistance pyrometer
B. Optical pyrometer
C. Radiation pyrometer
D. Infra red pyrometer - Which of the following is not classified as a thermo electric pyrometer ?
A. Resistance thermometer
B. Thermocouple
C. Optical pyrometer (disappearing filament type)
D. Radiation pyrometer
