A. Linear
B. Non-linear
C. Parabolic
D. Hyperbolic
Related Mcqs:
- 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 a, b & c - Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion ?
A. Nickel
B. Brass
C. Chromel
D. Invar - 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 A , B & C. - Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?
A. 250
B. 350
C. 550
D. 700 - The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?
A. d
B. d2
C. d3
D. d4 - To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with ________________?
A. Air
B. A metal powder or graphite
C. Oil
D. Mercury - 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 A , B & C - Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by__________________?
A. Filling nitrogen under pressure in the stem
B. Increasing the diameter of the tube
C. Using steel tube in place of glass tube
D. Accounting for the tube expansion - Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change ?
A. Water
B. Mercury
C. Methyl alcohol
D. Carbon-tetrachloride - Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an ?
A. Insulator
B. Conductor
C. Solid semi-conductor
D. Liquid semi-conductor
