Related Questions

Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.
A Increase of pressure
B Increase of thermal conductivity
C Volumetric expansion
D Differential linear expansion
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same
A Temperature measuring range (- 40°C to 450°C)
B Accuracy (± 1% of span)
C Speed of response
D All of the above
A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C.
A -38.9
B -11.9
C -60.9
D -80.9
Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C.
A - 39 and 350
B - 51 and 439
C - 79 and 395
D - 10 and 425
Capillary rise of mercury in a small diameter tube is proportional of (where, d = mercury of the rube, σ = surface tension of mercury)
A d
B 1/d
C σ
D 1/σ
একটি ত্রুটিপূর্ণ thermometer স্বাভাবিক চাপে বরফের 1ºC এবং বাষ্পে 98ºC পাঠ দেয়। উক্ত thermometer 40ºC পাঠ দিলে প্রকৃত তাপমাত্রা কত?
A 32.3ºC
B 36ºC
C 40.2ºC
D 48.4ºC
The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.
A 0
B 100
C 50
D None of these
Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by
A Making the volume of thermometer bulb as large as conveniently possible
B Reducing the volume of the capillary to a minimum
C Reducing the volume of the receiving element to a minimum
D All of the above
For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a
A Large area but small mass
B High thermal conductivity
C Small specific heat
D All of the above
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

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