10 Questions
What is the primary function of an LVDT?
Convert linear motion into electrical signal
How is an LVDT categorized?
As an Inductive Transducer
Why is LVDT considered an inductive sensor?
It works on the principle of a Transformer
What is the source of LVDT's electrical output?
Difference in secondary voltages
What must be done before LVDT is used to measure physical quantities like Force or Pressure?
Convert the physical quantities into displacement by a primary transducer
What is the primary purpose of signal conditioning in a measurement system?
To process the output signal from a sensor into a suitable form for the next stage of operation
Which role does a low pass filter typically play in signal conditioning?
To allow only low frequency signals through
What is the purpose of an Instrumentation Amplifier in signal conditioning?
To amplify and condition the weak sensor signals
What is the function of a Digital-to-Analog Converter (DAC) in signal conditioning?
To convert digital signals into analog signals
When is a Sample and Hold Circuit used in signal conditioning?
To capture and hold the analog signal at a specific time for further processing
Study Notes
LVDT Function and Characteristics
- The primary function of an LVDT (Linear Variable Differential Transformer) is to convert mechanical displacement into an electrical signal.
- An LVDT is categorized as a type of transducer, which is a device that converts one form of energy into another.
- LVDT is considered an inductive sensor because it uses a coil and magnetic core to detect changes in displacement.
LVDT Operation
- The source of LVDT's electrical output is the varying magnetic field induced by the displacement of the core.
- Before an LVDT can be used to measure physical quantities like force or pressure, it must be calibrated to correlate the displacement with the desired quantity.
Signal Conditioning
- The primary purpose of signal conditioning in a measurement system is to manipulate the signal from the sensor to prepare it for processing or analysis.
- A low pass filter typically plays the role of removing high-frequency noise from the signal in signal conditioning.
- The purpose of an Instrumentation Amplifier in signal conditioning is to amplify the low-level signal from the sensor while rejecting noise.
- A Digital-to-Analog Converter (DAC) in signal conditioning converts digital signals into analog signals for processing or analysis.
- A Sample and Hold Circuit is used in signal conditioning when a signal needs to be held at a certain level for a short period of time, typically for analog-to-digital conversion.
Test your knowledge of sensors and instrumentation with this quiz on Linear Variable Differential Transformer (LVDT). Assess your understanding of how LVDT converts linear motion into electrical signals and its working principle. This quiz is based on the lecture by Dr. Galal A. M. Atlam and is designed to reinforce your understanding of LVDT as an inductive transducer.
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