sensors lab

Front

A sensor has a sensitivity of 2 mV/°C and outputs 500 mV at 25°C. What is the expected output at 100°C?

Back

1500 mV

Front

Which parameter determines how well a sensor can return to the same output after repeated identical inputs?

Back

Repeatability

Front

A transducer has an impedance of 10kΩ and is connected to an amplifier with an input impedance of 1kΩ. What is the loading effect on the transducer?

Back

90% voltage drop

Front

A temperature sensor has a dead band of 2°C. If the current temperature is 30°C, at what minimum temperature will the sensor re-engage?

Back

32°C

Front

Which of the following environmental factors affects a sensor's performance the most in an industrial setting? Vibration, Electrical noise, Temperature variations, All of the above

Back

All of the above

Front

A strain gauge has a resistance of 120Ω and a gauge factor of 2. What will be the change in resistance when subjected to a strain of 1000µε?

Back

0.24Ω

Front

A Wheatstone bridge using a strain gauge is balanced at 0V initially. If the strain gauge resistance increases slightly, what happens to the bridge voltage?

Back

It increases

Front

Why are semiconductor strain gauges preferred over metallic ones for small deformations?

Back

They have higher gauge factors

Front

A resistive potentiometer is used to measure displacement. What will happen if the wiper contact loses connectivity?

Back

The sensor stops working completely

Front

An LVDT gives an output voltage of 5V for a displacement of 10 mm. What is its sensitivity?

Back

0.5 V/mm