Related Questions

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
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 Kirchoffs law
C Stafan-Boltzman law
D Seebeck effect
Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the
A Enhancement or attentuation of redia-tion occurs in the sighting path
B Object and surrounding are at almost the same temperature
C Object has varying emissivity
D Object is transparent
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
Starting temperature of optical radiation pyrometer is __________ °C.
A 800
B 400
C 1200
D 1500
Temperature of __________ can not 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
Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability?
A Mercury in glass thermometer
B Alcohol in glass thermometer
C Fused metal (Na or K) in steel thermometer
D Nitrogen in steel thermometer
What was the element used in traditional thermometers which is highly toxic in nature?
A Carbon
B Mercury
C Arsenic
D Cadmium
The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.
A Pressure
B Volume
C Viscosity
D All of the above

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