Frequency Modulation

What are the five Infinity Stones?

• Reality, Time, Soul, Mind, Power

• Life, Time, Strength, Body, Brain

• Reality, Soul, Brain, Strength, Domination

Which of these is the Time stone?

• 
• 
• 
• 
• 

when is Avengers: endgame coming out to theaters

• May 6, 2019

• April 21, 2019

• May 11, 2019

• April 26, 2019

What does frequency refer to?

• Putting audio onto the RF carrier signal
• The height of an audio wave
• How many times a wave repeats itself in a second
• How loud your audio is

What does modulation refer to?

• Putting audio onto the RF carrier signal
• The height of an audio wave
• How many times a wave repeats itself in a second
• How loud your audio is

If the amplitude of the modulating signal decreases, the carrier deviation __________.

• Increases

• Decreases

• Remains constant

• Goes to zero

A 100 MHz carrier is deviated 50 kHz by a 4 kHz signal. The modulation index is _______.

• 5

• 8

• 12.5

• 20

The maximum deviation of an FM carrier is 2 kHz by a maximum modulating signal of 400 Hz. The deviation ratio is ______.

• 0.2

• 5

• 8

• 40

FM bandwidth can be approximated by:

• Armstrong Rule

• Bessel's Rule

• Carson's Rule

• none of these

is when information is passed from a sender to a receiver.

• information

• communication

• signals

• analog signals