Pirani gauge operation is based on the following principle:
Show Hint
- Change in volume with pressure
- Change in viscosity with pressure
- Change in thermal conductivity of gas with pressure
- Ionization of gas at low pressure
The Correct Option is C
Solution and Explanation
Top Questions on Transducers for industrial instrumentation
In the force transducer shown in Figure (a), four identical strain gauges S1, S2, S3, and S4 are mounted on a cantilever at equal distance from its base. S1 and S2 are mounted on the top surface and S3 and S4 are mounted on the bottom surface, as shown in the Figure (a). These strain gauges are to be connected to form a Wheatstone bridge consisting of four arms A, B, C, and D, as shown in the Figure (b). From the following options, the correct order to maximize the measurement sensitivity is
- GATE IN - 2025
- Sensors and Industrial Instrumentation
- Transducers for industrial instrumentation
The primary coil of a linear variable differential transformer (LVDT) is supplied with AC voltage as shown in the figure. The secondary coils are connected in series opposition and the output is measured using a true RMS voltmeter. The displacement \(x\) of the core is indicated in mm on a linear scale. At the null position \(x = 0\), the voltmeter reads 0 V. If the voltmeter reads 0.2 V for a displacement of \(x = +2\) mm, then for a displacement of \(x = -3\) mm, the voltmeter reading, in V, is:
- GATE IN - 2025
- Sensors and Industrial Instrumentation
- Transducers for industrial instrumentation
Match the device with its working principle:
List-1 List-2 a. Bourdon gauge V. Deformation of element b. Pirani gauge I. Thermal conductivity c. Semiconductor strain gauge III. Piezo resistive effect d. Bi-metallic strip II. Thermal coefficient of expansion - TS PGECET - 2024
- Instrumentation Engineering
- Transducers for industrial instrumentation
Match the instruments with the parameters they measure:
List-1 Instrument List-2 (Parameter) A Autocollimeter \( \text{Angular error} \) B Hygrometer \( \text{Humidity} \) C Nephelometer \( \text{Density} \) D Mass spectrometer \( \text{Molecular weight} \) - TS PGECET - 2024
- Instrumentation Engineering
- Transducers for industrial instrumentation
- Gas chromatography is used for
- TS PGECET - 2024
- Instrumentation Engineering
- Transducers for industrial instrumentation
Questions Asked in TS PGECET exam
- Which of the following expression is a tautology?
- TS PGECET - 2024
- Digital Logic
- The 2’s complement representation of the decimal value $-15$ is
- TS PGECET - 2024
- Digital Logic
- For a machine to surpass all the letters of alphabets excluding vowels, how many states in DFA would be required?
- TS PGECET - 2024
- Theory of Computations
- The value of the integral \[ \int_C \frac{2e^z}{(z-4)(z-2)} \, dz \] where \( C: |z| = 3 \) is
- TS PGECET - 2024
- Complex numbers
- As per URDPFI Guidelines 2015 of Government of India, choose the correct hierarchy of plans from higher order to lower order
- TS PGECET - 2024
- Planning Theory
