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Digital Modulation Techniques

Total questions: 8

Worksheet time: 7mins

Name
Class
Date
1.

What does ASK stand for in digital modulation?

a)

Amplitude Signal Keying

b)

Analog Shift Keying

c)

Amplitude Shift Keying Modulation

d)

Amplitude Shift Keying

2.

In Amplitude Shift Keying (ASK), which parameter of the carrier is changed?

a)

Amplitude

b)

Frequency

c)

  • Phase

d)

Bandwidth

3.

Which modulation technique uses frequency changes to represent data?

a)

Frequency Shift Keying (FSK)

b)

Phase Shift Keying (PSK)

c)

Pulse Width Modulation (PWM)

d)

Amplitude Modulation (AM)

4.

How does FSK differ from ASK in terms of signal representation?

a)

FSK and ASK both use amplitude variations for signal representation.

b)

FSK uses frequency variations for signal representation, while ASK uses amplitude variations.

c)

FSK uses phase variations for signal representation, while ASK uses frequency variations.

d)

FSK uses voltage variations for signal representation, while ASK uses frequency variations.

5.

Quadrature Amplitude Modulation (QAM) is a combination of:

a)

ASK and PSK

b)

FSK and AM

c)

ASK and FSK

d)

PSK and FSK

6.

Which digital modulation technique uses two different frequencies to represent binary data?

a)

ASK

b)

PSK

c)

FSK

d)

QAM

7.

Which of the following is not a digital modulation technique?

a)

  • Amplitude Shift Keying (ASK)

b)

Frequency Shift Keying (FSK)

c)

Phase Shift Keying (PSK)

d)

Amplitude Modulation (AM)

8.

Which of the following is the main advantage of digital modulation over analog modulation?

a)

Higher power requirement

b)

Greater noise immunity

c)

Simpler circuits

d)

Requires less synchronization