Electronic Measurement Exam Prep
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Electronic Measurement Exam Prep
Sample questions with model answers
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Calculate the resonant frequency of the above circuit if the mutual inductance between the coils, M = 20μH.
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Resonant frequency = $f = rac{1}{2\pi\sqrt{LC}}$.
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Name the transducer shown in the above diagram. What category of transducer does it fall into? Give reasons.
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It is an LVDT; falls under inductive transducers due to its working principle.
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Calculate the gauge factor of a strain gauge, if the value of resistance is $152 \Omega$, which changes by $5 \Omega$ for $5000 \mu$ strain.
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Gauge factor = $\frac{\Delta R / R}{\epsilon} = \frac{5/152}{5000 \times 10^{-6}}$.
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Give reasons for any five of the following: (a) Platinum resistance thermometers are widely used in temperature measurement for industrial applications. (b) Digital storage oscilloscope can keep stored data for months. (c) A multimeter can be used for measuring both dc as well as ac quantities. (d) The electrons tend to converge in the form of a convex lens in the spaces between the anodes. (e) Themistor has a negative resistance effect. (f) Spectrum analyzer is preferred for the measurement of distortion.
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Answers should explain the reasons for each statement.
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