A. Mercury in glass thermometer
B. Optical pyrometer
C. Iron-constantan thermocouple
D. Alcohol filled thermometer
Related Mcqs:
- Which of the following temperature measuring instruments need not touch the object whose temperature is being measured ?
A. Radiation/infrared pyrometer
B. Filled system thermometer
C. Mercury in glass thermometer
D. Thermo electric pyrometer - 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 - Temperature measuring instruments are standardised mostly with _____________ points of pure substances?
A. Melting
B. Boiling
C. Both A. & B.
D. Neither A. nor B. - Which of the following instruments is not used for measuring sub-zero (<0°) temperatures ?
A. Platinum resistance thermometer
B. Mercury in glass thermometer
C. Vapor pressure thermometer
D. Radiation pyrometer - All the thermocouples used for temperature measurement use dissimilar metal ________________?
A. Strips
B. Bars
C. Wires
D. Beads - 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 - Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop?
A. Tank 1
B. Tank 2
C. Tank 3
D. Tank 4 - 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 - Continuous measurement of moisture content of paper in paper industry is done by measuring the_________________?
A. Thermal conductivity through the paper
B. Electrical resistance through the paper
C. Magnetic susceptibility
D. None of these - Which of the following judges the accuracy of an instrument ?
A. Dead zone
B. Drift
C. Static error
D. None of these
