Which of the following is a contact type temperature sensor?
Analysis & Theory
Thermocouples require contact with the object to measure its temperature.
RTD stands for:
A
Resistive Temperature Detector
B
Relative Thermocouple Device
C
Resistance Time Detector
D
Resonant Thermal Device
Analysis & Theory
RTD stands for Resistive Temperature Detector, where resistance varies with temperature.
Which device uses the Seebeck effect to measure temperature?
Analysis & Theory
Thermocouples work based on the Seebeck effect, which generates voltage with temperature difference.
Which of the following is used for **very high temperature** measurement (above 1000°C)?
Analysis & Theory
Pyrometers are non-contact devices used for very high temperature measurement.
Which temperature sensor has **negative temperature coefficient** (resistance decreases with temperature)?
Analysis & Theory
Thermistors typically have a negative temperature coefficient (NTC).
Which of the following is **not** used to measure pressure?
Analysis & Theory
Thermistor is used for temperature measurement, not pressure.
Which of these pressure sensing elements works based on **strain** induced in a material?
Analysis & Theory
Strain gauges measure deformation (strain) which is related to pressure or force.
Piezoelectric sensors are mainly used for measuring:
Analysis & Theory
Piezoelectric sensors are best suited for dynamic or rapidly changing pressures.
Which device uses elastic deformation for pressure measurement?
Analysis & Theory
Diaphragms deform elastically under pressure, allowing pressure to be measured.
In a strain gauge, pressure is converted to:
Analysis & Theory
Strain gauges convert mechanical strain into a change in resistance.