Exam-style question
Try this first
EC01: For Data communication systems, a student is analysing a laboratory comparator output. Which option gives the best Amplitude and frequency modulation reasoning for the objective "Compare advantages and limitations of AM and FM"?.
- A.EC01 correct: In the laboratory comparator output, the answer follows the signal path from input condition to component response to output change, so it supports Compare advantages and limitations of AM and FM.
- B.EC01 distractor: It names a component but does not connect the input condition to the measured output in Amplitude and frequency modulation.
- C.EC01 distractor: It reverses the cause-and-effect chain, so the output is explained before the circuit condition is set.
- D.EC01 distractor: It gives a generic electronics definition without applying the laboratory comparator output context.
Model answer
What a good answer should say
- The correct option is EC01 correct: In the laboratory comparator output, the answer follows the signal path from input condition to component response to output change, so it supports Compare advantages and limitations of AM and FM.
Explanation
Why this works
It is best because it keeps Amplitude and frequency modulation anchored to the circuit signal path: input condition, component response, then output change. The distractors are wrong because they omit the output link, reverse the electronics causality, or drift into a generic component definition rather than applying the laboratory comparator output.
Common mistake
No common mistake is linked to this question yet.