Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

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

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

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

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

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

Which of the following is never used as an element of industrial resistance thermometer?

A

Lead

B

Nickel

C

Copper

D

30% iron + 70% nickel

Shehnaz has to record temperature of a covid-19 patient in Celsius but hard thermometer reads Fahrenheit. The patient's temperature is 100.7° Fahrenheit. What is the temperature in Celsius?

A

32°C

B

36.5°C

C

37.5° C

D

38.2°C

A nurse has to record temperature of patients in Celsius but her thermometer reads Fahrenheit. A patient's temperature is 100.7০ F. What is the temperature in ০C?

A

32 ০C

B

36.5 ০C

C

40 ০C

D

213.3 ০C

The temperature range for which copper resistance thermometer can be used is __________ °C

A

0 to 150

B

-200 to 150

C

350 to 750

D

500 to 900

Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an

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