The fundamental law that is used in temperature measurement is known as
Zeroth law of thermodynamics
The question asks about the fundamental law used in measuring temperature. The options provided are various laws of thermodynamics, and the correct answer is the Zeroth Law of Thermodynamics. Let's understand why.
The Zeroth Law of Thermodynamics is crucial because it provides the foundation for temperature measurement. It states that if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other. This principle allows us to use thermometers as reliable tools for measuring temperature.
Let's evaluate each option:
- First Law of Thermodynamics: This law is related to the conservation of energy, stating that energy can neither be created nor destroyed, only transformed. It is more about energy conservation in systems.
- Second Law of Thermodynamics: This involves entropy and states that the total entropy of an isolated system can never decrease over time. It is associated with the direction of thermodynamic processes.
- Third Law of Thermodynamics: This states that the entropy of a perfect crystal at absolute zero is exactly zero. It's concerned with conditions near absolute zero.
- Zeroth Law of Thermodynamics: As explained, it establishes the concept of temperature and thermal equilibrium. It is the fundamental basis for the temperature measurement, making it the correct choice here.
Thus, the Zeroth Law of Thermodynamics forms the basis for the use of thermometers and the measurement of temperature by establishing thermal equilibrium relationships. Therefore, it is the correct answer to the question.
Similar Questions
Which of the following transducers are not linear ?
i. thermistor
ii. thermocouple
iii. IC sensorWhich of the following sensors has excellent linearity ?
Consider the following statements associated with electrical and electronic transducers
A. Little power is consumed by transducer
B. Mass intertia effects are not minimized
C. The response time is small
D. Transmission and processing the signal for the purpose of measurement are easier.
Choose the correct answer from the options given below:
Incorrect statements regarding measurement are given :
A. Hot wire anemometer is used to measure displacement
B. Hall effect is used to measure current
C. LVDT is used to measure acceleration and gas flow
D. Piezoelectric Transducer is used to measure acceleration
Choose the correct answer from the options given below:
Match List I with List II
LIST I LIST II A. Relative error I. The ability of tde device to give identical O/P when repeated measurements are made witd tde same I/P signal B. Precision II. The ratio of difference between measured value and tde true value to tde true value of tde measurand C. Caliberation III. The smallest increment in measure tdat can be detected witd certainity by tde instrument D. Resolution IV. The process of making adjustments or tde scale so tdat tde instrument reading conform to an accepted standard. Choose the correct answer from the options given below:
Match the following lists :
List – I List – II a. Electromechanical Device i. Seismic Device b. Optical Device ii. Piezo-electric c. Gyroscopic device iii. Interferometers d. Absolute motion device iv. Aerospace vehicle Choose the correct answer from the codes given below:
Consider the following transducers or transducer systems :
(a) Float elements
(b) Seismic system
(c) Gyroscope
Arrange the above transducers/systems in decreasing order of the availability of possible number of output signals.
Assertion (A) : Normally, some standard signal conditioner and display devices are used with a transducer, unless they are custom-built to suit the requirements of the transducers.
Reason (R) : A transducer is a device which receives energy in one form and transfer it to a convenient form.
Select your answer using the codes given below :
The mechanical elements that are used to convert the applied force into a displacement are called :
A device used to convert a non-electrical quantity into an electrical signal is called :
Important Questions from Basics of Transducers
_____ converts mechanical displacement into electrical signals.
Which of the following transducers are not linear ?
i. thermistor
ii. thermocouple
iii. IC sensorWhich of the following sensors has excellent linearity ?
Consider the following statements associated with electrical and electronic transducers
A. Little power is consumed by transducer
B. Mass intertia effects are not minimized
C. The response time is small
D. Transmission and processing the signal for the purpose of measurement are easier.
Choose the correct answer from the options given below:
Incorrect statements regarding measurement are given :
A. Hot wire anemometer is used to measure displacement
B. Hall effect is used to measure current
C. LVDT is used to measure acceleration and gas flow
D. Piezoelectric Transducer is used to measure acceleration
Choose the correct answer from the options given below:
