A. Antimony
B. Gold
C. Silver
D. Nickel
Related Mcqs:
- Temperature of _____________ cannot be measured by an optical or radiation pyrometer?
A. Hot blast (air) from stoves
B. Molten slag flowing out of blast furnace
C. Combustion space in boilers
D. Rotary limestone calcination kiln - Starting temperature of optical radiation pyrometer is ______________ °C?
A. 800
B. 400
C. 1200
D. 1500 - 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 - 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 - 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 - Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?
A. Thermocouple
B. Resistance thermometer
C. Mercury in glass thermometer
D. Vapor pressure thermometer - Measurement of sub-zero Celsius temperature in industry is done most commonly by __________________?
A. Thermocouples
B. Resistance thermometers
C. Gas thermometers
D. Bi-metallic thermometers - Working principle of radiation pyrometer is based on the ________________?
A. Wien’s law
B. Kirchoff’s law
C. Stefan-Boltzmann law
D. Seebeck effect - Which of the following is a ‘contact’ pyrometer ?
A. Resistance pyrometer
B. Optical pyrometer
C. Radiation pyrometer
D. Infra red pyrometer - Working principle of radiation pyrometer is based on the __________________?
A. Wien’s law
B. Kirchoff’s law
C. Stefan Boltzmann law
D. Seebeck effect
