GATE Sensors and Industrial Instrumentation: Resistive capacitive and inductive sensors – Previous Year Questions
14 GATE previous year questions on Resistive capacitive and inductive sensors (Sensors and Industrial Instrumentation, Instrumentation Engineering) with answers and explanations, from every paper.
- GATE 2021 IN Q28 – A strain gauge of nominal resistance 1000 Ω has gauge factor 2.5. At applied strain 100 μm/m, its resistance becomes Ω (two decimal places).
- GATE 2021 IN Q63 – The full bridge shown uses linear strain gauges with gauge factor 2. At 0 °C and zero strain, R 1=R 2=R 3=R 4=100\ . Their temperature coefficient is…
- GATE 2023 IN Q12 – Inductance of a coil is measured as 10 mH, using an LCR meter, when no other objects are present near the coil. The LCR meter uses a sinusoidal…
- GATE 2023 IN Q51 – A wire-wound ‘resistive potentiometer type' angle sensor with 72 turns is used in an application. The first turn of the potentiometer is connected to…
- GATE 2023 IN Q52 – The two secondaries of a linear variable differential transformer (LVDT) showed a magnitude of 2 V (RMS) for zero displacement position of the core.…
- GATE 2024 IN Q15 – The parallel-plate capacitor shown has plate area A. Its dielectric-layer thicknesses are d 1,d 2 and relative permittivities 1=1 (air), 2 (solid),…
- GATE 2024 IN Q52 – Consider the capacitive sensor circuit and its output voltage shown in the figure. The circuit is switched ON at t = 0. Assuming the opamp to be…
- GATE 2024 IN Q56 – A shielded cable with C stray=20 pF and R wire=10 Ω connects the inductive sensors shown. The RMS value of V out is V (two decimal places). All…
- GATE 2025 IN Q14 – The primary coil of the LVDT shown is supplied with AC voltage. Its secondary coils are connected in series opposition, with output measured by a true…
- GATE 2025 IN Q15 – Four identical strain gauges S1, S2, S3, and S4 are mounted on the cantilever force transducer at equal distance from its base. S1 and S2 are on the…
- GATE 2025 IN Q53 – A metallic strain gauge of resistance R SG is connected as shown, with lead resistances R L1,R L2,R L3. Gauge factor is 2 and nominal resistance R…
- GATE 2025 IN Q57 – The shown air-filled parallel-plate electrostatic actuator has plate area 100\ m100\ m. With zero charge and spring restoring force, the plate gap is…
- GATE 2026 IN Q25 – Active strain gauges are connected in a half-bridge configuration to measure strain in a cantilever element. When powered by a voltage source of 10\…
- GATE 2026 IN Q50 – A parallel-plate capacitive displacement sensor has a plate area of 2\ cm2. The air gap between the plates is decreased by 0.1 mm from an initial…