Question 1

Why is digital signal conditioning crucial in interfacing analog sensors with digital systems?

Accepted Answer

It ensures accurate and repeatable mapping between analog inputs and digital values.

Answer

It only works with digital signals

Answer

It eliminates the need for sensors

Answer

It reduces the complexity of wiring

Question 2

How does hysteresis improve the performance of comparators?

Accepted Answer

It helps stabilize the output by creating a deadband to filter noise.

Answer

It increases the signal strength

Answer

It reduces response time

Answer

It enhances battery life

Question 3

What is the function of a comparator in digital systems?

Accepted Answer

To compare two analog voltages and produce a digital output.

Answer

To generate random outputs

Answer

To amplify both signals equally

Answer

To convert digital signals to analog

Question 4

How does Boolean algebra contribute to process control systems?

Accepted Answer

It enables the design of digital systems that respond logically to inputs.

Answer

It connects only analog inputs

Answer

It simplifies power requirements

Answer

It reduces the number of sensors needed

Question 5

What binary representation does a digital signal use?

Accepted Answer

Two discrete states: High (1) and Low (0).

Answer

Three distinct states: Low, Medium, High

Answer

Only decimal numbers

Answer

Analog continuous values

Question 6

Why do digital systems require data in digital form?

Accepted Answer

To operate efficiently in process control systems.

Answer

To increase the noise levels

Answer

To simplify the wiring

Answer

To avoid using batteries

Question 7

What is one advantage of using digital control systems?

Accepted Answer

They can simultaneously monitor and control multiple process variables efficiently.

Answer

They require more manual intervention

Answer

They are slower than traditional systems

Answer

They are less expensive than analog systems

Question 8

How does hysteresis improve the performance of comparators?

Accepted Answer

It prevents rapid switching of the output due to noise or fluctuations.

Answer

It enables tri-state operations.

Answer

It increases the speed of the comparator.

Answer

It allows for more accurate voltage comparisons.

Question 9

What does the conversion resolution refer to in digital systems?

Accepted Answer

The smallest change in output for a change in input.

Answer

The time taken for a signal to convert.

Answer

The maximum input level the system can accept.

Answer

The range of input values that can be processed.

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