Instrumentation Transducers

Temperature Measurement

Question 1
Marks : +2 | -2
Pass Ratio : 11%
Which of the following is used as indication instrument in a liquid expansion system?
Bellows
Bourdon tube
Ammeter
Thermometer
Explanation:
Bourdon tube converts pressure into displacement and in liquid expansion systems output expansion pressure is applied to bourdon tube for indication.
Question 2
Marks : +2 | -2
Pass Ratio : 11%
When bimetallic thermometer heated, curling occurs to the side of metal with least temperature coefficients.
True
False
Explanation:
A bimetallic type thermometer, when heated curls to the side of metal with least temperature coefficient. Number of curls will be proportional to temperature applied.
Question 3
Marks : +2 | -2
Pass Ratio : 5%
Ratio of net amount of heat received and stored in the body for certain time interval is known as _________________
Temperature
Thermal coefficient
Thermal storage capacity
None of the mentioned
Explanation:
Thermal storage capacity denoted by C is the ratio of the Net amount of heat received and stored in the body.
Question 4
Marks : +2 | -2
Pass Ratio : 5%
Heat transfer coefficient of a material with length l is _________
K/l
l/K
1/K
Kl
Explanation:
Heat transfer coefficient of a material is the ratio of K and l, where K is the thermal conductivity of material and l is the length of the heat transfer path.
Question 5
Marks : +2 | -2
Pass Ratio : 26%
Which of the following is true for bimetallic type thermometer?
Two metals have same temperature coefficients
Two metals have different temperature coefficient
One metal is cooled always
None of the mentioned
Explanation:
In a bimetallic type thermometer, two metals are used which are different in temperature coefficients.
Question 6
Marks : +2 | -2
Pass Ratio : 5%
IPTS stands for ________________
International Practical Temperature Scale
Indian Primary Temperature Scale
International Primary Temperature Scale
International Practical Temperature Standard
Explanation:
IPTS is the short form of name International Standard Temperature Scale.
Question 7
Marks : +2 | -2
Pass Ratio : 16%
In liquid in steel bulb thermometer, which liquid can be used for measuring temperature up to 60000C?
Mercury
Ether
Water
None of the mentioned
Explanation:
Mercury as a liquid provides temperature range of -4000C to 65000C.
Question 8
Marks : +2 | -2
Pass Ratio : 5%
Output of a bimetallic element will be __________________
Strain
Pressure
Displacement
Voltage
Explanation:
Bimetallic element is used for measuring temperature, it produces proportional output displacement for input temperature.
Question 9
Marks : +2 | -2
Pass Ratio : 5%
Which of the following can be used for measuring temperature?
Metallic diaphragm
Fluid expansion system
Capsule
Bourdon tube
Explanation:
Fluid expansion system is a method for measuring temperature, in which expansion of liquid is measured with temperature.
Question 10
Marks : +2 | -2
Pass Ratio : 32%
Analogous quantities of heat flow and temperature in electrical are _____________ and _______________
Potential and current
Current and potential
Power and potential
Current and power
Explanation:
Heat flow in the thermal system is analogous to current flow in electrical, and temperature between two points is analogous to potential between two points in electrical.