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Questions and Answers
What is the range of the LVDT mentioned in the text?
What is the range of the LVDT mentioned in the text?
- 0 to +15mm (correct)
- +/- 10mm
- +/- 15mm
- 0 to +10mm
What is the purpose of the balanced demodulator?
What is the purpose of the balanced demodulator?
- To compare the output signals with the excitation signal and produce a phase-sensitive DC output (correct)
- To scale the DC output voltages to the required levels
- To display the final output voltage on a digital voltmeter
- To amplify the output signals from the LVDT
Which component is used for scaling the DC voltages obtained from the balanced demodulator?
Which component is used for scaling the DC voltages obtained from the balanced demodulator?
- The digital voltmeter
- The LVDT
- An op-amp (correct)
- The balanced demodulator itself
What is the full-scale reading of the digital voltmeter used for displaying the output?
What is the full-scale reading of the digital voltmeter used for displaying the output?
What is the resolution of the output voltage display?
What is the resolution of the output voltage display?
What is the purpose of the audio frequency oscillator mentioned in the text?
What is the purpose of the audio frequency oscillator mentioned in the text?
In which position of the core does the LVDT produce the maximum output voltage magnitude?
In which position of the core does the LVDT produce the maximum output voltage magnitude?
What determines the polarity of the output voltage in an LVDT?
What determines the polarity of the output voltage in an LVDT?
In which position of the core does the LVDT produce an output voltage with opposite polarity to the excitation signal?
In which position of the core does the LVDT produce an output voltage with opposite polarity to the excitation signal?
What is the purpose of having two identical secondary coils in an LVDT?
What is the purpose of having two identical secondary coils in an LVDT?
What is the term used for the output voltage when the core is at the center position (x = 0)?
What is the term used for the output voltage when the core is at the center position (x = 0)?
How does the displacement of the core affect the output voltage in an LVDT?
How does the displacement of the core affect the output voltage in an LVDT?
What is the purpose of the LVDT device described in the text?
What is the purpose of the LVDT device described in the text?
What happens to the output voltage on the secondary coils S1 and S2 when the core is centered within the primary coil?
What happens to the output voltage on the secondary coils S1 and S2 when the core is centered within the primary coil?
How does the output voltage on the secondary coils S1 and S2 change as the core moves away from the central position?
How does the output voltage on the secondary coils S1 and S2 change as the core moves away from the central position?
What is the relationship between the output voltage on the secondary coils S1 and S2 and the direction of the core movement?
What is the relationship between the output voltage on the secondary coils S1 and S2 and the direction of the core movement?
What is the purpose of the open cage construction of the LVDT device?
What is the purpose of the open cage construction of the LVDT device?
What is the purpose of the sinusoidal excitation source connected to the primary coil?
What is the purpose of the sinusoidal excitation source connected to the primary coil?
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