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Electrical Measurements ELEG 323 Quiz

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Questions and Answers

What is the main purpose of an anti-aliasing filter in the context of analog-to-digital conversion?

To digitize the analog signal and hold it for quantization and encoding

To optimize the sampling frequency and price ratio

To improve the resolution and reduce noise in the sampled signal

To prevent harmful folding by ensuring the sampling frequency is twice the maximum frequency component of the function being sampled (correct)

Why must the sampling frequency in analog-to-digital conversion adhere to the Nyquist sampling theorem?

To ensure accurate display of the digital signal

To avoid harmful folding due to aliasing (correct)

To optimize the price-to-resolution ratio

To reduce noise and improve resolution

Which step in analog-to-digital conversion involves capturing and holding the analog signal for further processing?

Resolving and encoding

Quantization and encoding

Anti-aliasing filtering

Sampling and holding (correct)

Which measurement involves rise-time, attenuation, bridge circuit, resonance, and oscillation frequency?

Capacitance and inductance measurement Signup and view all the answers

Which type of converter is known for its high resolution, linearity, and accuracy but has a limited bandwidth for DC signals?

Dual Slope Converter Signup and view all the answers

What is the distinctive feature of the Flash Converter?

Conversion of all bits in parallel Signup and view all the answers

What characterizes the Pipeline Converter in terms of processing samples?

Residual is calculated and passed to next stage Signup and view all the answers

Which converter uses an iterative method to convert the signal bit by bit, starting from the most significant bit (MSB)?

Successive Approximation Register (SAR) Signup and view all the answers

What is a key characteristic of the Delta-Sigma Converter?

Modulator outputs a stream of ones and zeros Signup and view all the answers

What is a disadvantage of using a shunt resistor for current measurements?

Voltage seen by the source changes as a function of current Signup and view all the answers

What is a key advantage of using a current sense amplifier for high-side measurement?

Easy to detect load short to ground Signup and view all the answers

What does the modulator output in a Delta-Sigma Converter represent?

A stream of ones and zeros Signup and view all the answers