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CS_16 QUIZ

Total questions: 12

Worksheet time: 7mins

Name
Class
Date
1.

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

a)

A) AM Modulation

b)

B) DSB-SC Modulation

c)

C) SSB-SC Modulation

d)

D) Frequency Modulation

2.

In AM modulation, the message signal is typically:

a)

A) The carrier signal

b)

B) A high-frequency signal

c)

C) A low-frequency signal

d)

D) The sum of carrier and modulating signals

3.

What are the key components of AM demodulation?

a)

A) Filter and amplifier

b)

B) Modulator and demodulator

c)

C) Mixer and oscillator

d)

D) Detector and low-pass filter

4.

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

a)

A) Frequency Modulation

b)

B) Phase Modulation

c)

C) Amplitude Modulation

d)

D) Pulse Modulation

5.

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

a)

A) Frequency Modulation

b)

B) Phase Modulation

c)

C) Amplitude Modulation

d)

D) Pulse Modulation

6.

Which component is typically used to demodulate FM signals?

a)

A) Mixer

b)

B) Filter

c)

C) Amplifier

d)

D) Detector

7.

ASK modulation stands for:

a)

A) Amplitude Shift Keying

b)

B) Angle Shift Keying

c)

C) Amplitude Spectrum Keying

d)

D) Angle Spectrum Keying

8.

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

a)

A) PSK modulation

b)

B) FSK modulation

c)

C) ASK modulation

d)

D) Spread Spectrum modulation

9.

Spread spectrum modulation techniques are primarily used for:

a)

A) Increasing the data transmission rate

b)

B) Reducing power consumption in communication systems

c)

C) Enabling long-range wireless communication

d)

D) Enhancing signal security and resistance to interference

10.

Linear modulation techniques refer to:

a)

A) Modulation schemes without any phase variations

b)

B) Modulation schemes with constant amplitude and phase variations

c)

C) Modulation schemes with only amplitude variations

d)

D) Modulation schemes with frequency variations

11.

ISI stands for:

a)

A) Inter-Symbol Interference

b)

B) Interspersed Signal Interference

c)

C) Intra-Symbol Interference

d)

D) Interference Suppression Interleav

12.

Pulse shaping is used to:

a)

A) Eliminate noise interference

b)

B) Reduce power consumption

c)

C) Prevent inter symbol interference

d)

D) Enhance signal modulation