CS_16 QUIZ

Which modulation technique is used to combine a high-frequency carrier signal with a lower-frequency audio signal?

• A) AM Modulation

• B) DSB-SC Modulation

• C) SSB-SC Modulation

• D) Frequency Modulation

In AM modulation, the message signal is typically:

• A) The carrier signal

• B) A high-frequency signal

• C) A low-frequency signal

• D) The sum of carrier and modulating signals

What are the key components of AM demodulation?

• A) Filter and amplifier

• B) Modulator and demodulator

• C) Mixer and oscillator

• D) Detector and low-pass filter

Which modulation technique involves varying the frequency of a carrier signal in proportion to the amplitude of the modulating signal?

• A) Frequency Modulation

• B) Phase Modulation

• C) Amplitude Modulation

• D) Pulse Modulation

Which modulation technique involves varying the instantaneous phase of a carrier signal in proportion to the modulating signal?

• A) Frequency Modulation

• B) Phase Modulation

• C) Amplitude Modulation

• D) Pulse Modulation

Which component is typically used to demodulate FM signals?

• A) Mixer

• B) Filter

• C) Amplifier

• D) Detector

ASK modulation stands for:

• A) Amplitude Shift Keying

• B) Angle Shift Keying

• C) Amplitude Spectrum Keying

• D) Angle Spectrum Keying

Which modulation technique involves varying the amplitude of the carrier signal to represent digital data?

• A) PSK modulation

• B) FSK modulation

• C) ASK modulation

• D) Spread Spectrum modulation

Spread spectrum modulation techniques are primarily used for:

• A) Increasing the data transmission rate

• B) Reducing power consumption in communication systems

• C) Enabling long-range wireless communication

• D) Enhancing signal security and resistance to interference

Linear modulation techniques refer to:

• A) Modulation schemes without any phase variations

• B) Modulation schemes with constant amplitude and phase variations

• C) Modulation schemes with only amplitude variations

• D) Modulation schemes with frequency variations