What is the modulation index in an FM phone...

Question 1 / 2050k5g1ka79dzvbQ7HPNi

Question 1 of 2050k5g1ka79dzvbQ7HPNi

What is the modulation index in an FM phone signal having a maximum frequency deviation of 3,000 Hz on either side of the carrier frequency when the modulating frequency is 1,000 Hz?

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Question 1 of 20

50k5g1ka79dzvbQ7HPNi

What is the modulation index in an FM phone signal having a maximum frequency deviation of 3,000 Hz on either side of the carrier frequency when the modulating frequency is 1,000 Hz?

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🔍 Key Concepts

• Frequency deviation in FM (how far the carrier moves from its resting frequency) • Modulation index for FM (the basic formula that relates deviation and modulating frequency) • The relationship between maximum deviation and modulating frequency

💭 Think About

• What is the standard formula for modulation index in frequency modulation in terms of maximum deviation and modulating frequency? • If the carrier can deviate by 3,000 Hz and the modulating tone is 1,000 Hz, what simple ratio can you form from these two values? • Once you compute that ratio, which of the choices matches it most closely in value and in units (dimensionless vs Hz)?

✅ Before You Answer

• Confirm that modulation index for FM is a dimensionless number, not expressed in hertz. • Use the maximum frequency deviation (3,000 Hz), not the total swing from lowest to highest frequency. • After calculating the ratio, double-check that you did not invert numerator and denominator when forming the fraction.

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Question 1 of 20

What is the modulation index in an FM phone signal having a maximum frequency deviation of 3,000 Hz on either side of the carrier frequency when the modulating frequency is 1,000 Hz?

0.3

3,000

1,000

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Question 1 / 2050k5g1ka79dzvbQ7HPNi

Question 1 of 2050k5g1ka79dzvbQ7HPNi

What is the modulation index in an FM phone signal having a maximum frequency deviation of 3,000 Hz on either side of the carrier frequency when the modulating frequency is 1,000 Hz?

Back

Question 1 of 20

50k5g1ka79dzvbQ7HPNi

What is the modulation index in an FM phone signal having a maximum frequency deviation of 3,000 Hz on either side of the carrier frequency when the modulating frequency is 1,000 Hz?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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