Post-Test

What does AM stand for in radio modulation?

• Amplitude Modulation

• Amplitude Measurement

• Analog Modulation

• Audio Modulation

Which modulation method changes the amplitude of the carrier wave?

• Digital Modulation

• Phase Modulation

• Amplitude Modulation

• Frequency Modulation

What is the frequency range for AM radio?

• 300 kHz to 3 MHz

• 88 MHz to 108 MHz

• 1 MHz to 10 MHz

• 535 kHz to 1705 kHz

What is the bandwidth of an amplitude-modulated signal if the modulating signal has a bandwidth of 15 kHz?

• 45 kHz

• 60 kHz

• 30 kHz

• 15 kHz

Which modulation method is less susceptible to noise?

• Amplitude Modulation

• Frequency Modulation

• Phase Modulation

• Digital Modulation

What is the frequency deviation in FM if the required bandwidth is 180 kHz and the modulating frequency is 15 kHz?

• 75 kHz

• 90 kHz

• 120 kHz

• 105 kHz

What is the primary advantage of FM over AM?

• Longer transmission range

• Better sound quality

• Lower cost

• Simplicity of transmitter

What is the term for the point where the voltage crosses zero in a sine wave?

• Amplitude Point

• Zero Crossing

• Peak Point

• Frequency Point

Which of the following is true about FM stations?

• They have a lower bandwidth than AM stations.

• They are more prone to interference.

• They have a higher bandwidth than AM stations.

• They operate at lower frequencies than AM stations.

What is the main reason AM radio is more susceptible to noise?

• It uses frequency modulation.

• It operates at lower frequencies.

• It stores information in amplitude.

• It has a higher bandwidth.