Related Questions

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 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
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
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
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
Which one of the following thermometers is known as pyrometer?
A Thermo-electric thermometers
B Radiation thermometers
C Gas thermometers
D Liquid thermometers
The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,
A Reduces the contrast of the image and also its sharpness
B Increases the contrast of the image but reduces the sharpness
C Increases both the contrast and sharpness
D Reduces the contrast but increases the sharpness
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
A Global warming
B Green house
C Atmospheric effect
D Ionosphere

Next steps