What is the modulation index of a FM phone...

Question 1 / 20cTZCSxfBDCf2G58gYRd7

Question 1 of 20cTZCSxfBDCf2G58gYRd7

What is the modulation index of a FM phone transmitter producing a maximum carrier deviation of 6 kHz when modulated with a 2 kHz modulating frequency?

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Question 1 of 20

cTZCSxfBDCf2G58gYRd7

What is the modulation index of a FM phone transmitter producing a maximum carrier deviation of 6 kHz when modulated with a 2 kHz modulating frequency?

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🔍 Key Concepts

• FM modulation index definition • Relationship between frequency deviation and modulating frequency • Importance of using the same units (Hz vs kHz) in calculations

💭 Think About

• What is the standard formula for the modulation index in frequency modulation (FM)? • How do you convert the given kHz values so the units match in the formula? • Once you plug the numbers into the formula, what kind of result (large/small, unitless) should you expect for a modulation index?

✅ Before You Answer

• Confirm that both frequency deviation and modulating frequency are in the same units before dividing • Remember that modulation index for FM is a ratio, not in Hz or kHz • Check whether any answer choices have incorrect units or clearly unreasonable magnitudes for a ratio

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Question 1 of 20

What is the modulation index of a FM phone transmitter producing a maximum carrier deviation of 6 kHz when modulated with a 2 kHz modulating frequency?

6,000

2,000

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