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In an FM system, when the AF is 500 Hz and the AF voltage is 2.4 V, the deviation is 4.8 kHz. If the AF voltage is now increased to 7.2 V, the new deviation will be
  • a)
    4.8 kHz
  • b)
    9.6 kHz
  • c)
    14.4 kHz
  • d)
    28.8 kHz
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In an FM system, when the AF is 500 Hz and the AF voltage is 2.4 V, th...
Δf' = 2 x 7.2 14.4 kHz
New frequency donation will be 14.4 kHz.
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Most Upvoted Answer
In an FM system, when the AF is 500 Hz and the AF voltage is 2.4 V, th...
Calculation of Deviation in FM System

Given:

AF = 500 Hz

AF voltage = 2.4 V

Deviation = 4.8 kHz

Formula used:

Deviation (Δf) = (AF voltage / AF) * 2

Calculation:

Using the formula,

Deviation (Δf) = (AF voltage / AF) * 2

Substituting the given values,

4.8 kHz = (2.4 V / 500 Hz) * 2

Simplifying,

4.8 kHz = 0.0096 * 2

4.8 kHz = 0.0192 kHz or 19.2 Hz

If the AF voltage is increased to 7.2 V, then the new deviation will be,

Deviation (Δf) = (AF voltage / AF) * 2

Substituting the new value of AF voltage,

Deviation (Δf) = (7.2 V / 500 Hz) * 2

Simplifying,

Deviation (Δf) = 0.0288 kHz or 28.8 Hz.

Therefore, the new deviation will be 14.4 kHz (Option C).
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In an FM system, when the AF is 500 Hz and the AF voltage is 2.4 V, the deviation is 4.8 kHz. If the AF voltage is now increased to 7.2 V, the new deviation will bea)4.8 kHzb)9.6 kHzc)14.4 kHzd)28.8 kHzCorrect answer is option 'C'. Can you explain this answer?
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In an FM system, when the AF is 500 Hz and the AF voltage is 2.4 V, the deviation is 4.8 kHz. If the AF voltage is now increased to 7.2 V, the new deviation will bea)4.8 kHzb)9.6 kHzc)14.4 kHzd)28.8 kHzCorrect answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2025 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about In an FM system, when the AF is 500 Hz and the AF voltage is 2.4 V, the deviation is 4.8 kHz. If the AF voltage is now increased to 7.2 V, the new deviation will bea)4.8 kHzb)9.6 kHzc)14.4 kHzd)28.8 kHzCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an FM system, when the AF is 500 Hz and the AF voltage is 2.4 V, the deviation is 4.8 kHz. If the AF voltage is now increased to 7.2 V, the new deviation will bea)4.8 kHzb)9.6 kHzc)14.4 kHzd)28.8 kHzCorrect answer is option 'C'. Can you explain this answer?.
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