Modulation
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PHXII15:COMMUNICATION SYSTEMS

356786 A carrier wave of amplitude \(15\;V\) is modulated by a sinusoidal base band signal of amplitude \(3\;V\). The ratio of maximum amplitude to minimum amplitude in an amplitude modulated wave is

1 2
2 \(\dfrac{3}{2}\)
3 5
4 1
PHXII15:COMMUNICATION SYSTEMS

356787 In an amplitude modulation, a modulating signal having amplitude of \(X V\) is superimposed with a carrier signal of amplitude \(Y V\) in first case. Then, in second case, the same modulating signal is superimposed with different carrier signal of amplitude \(2\;Y\;V\). The ratio of modulation index in the two cases respectively will be

1 \(2: 1\)
2 \(1: 2\)
3 \(1: 1\)
4 \(4: 1\)
PHXII15:COMMUNICATION SYSTEMS

356788 The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as

1 Transmission
2 Reception
3 Modulation
4 Detection
PHXII15:COMMUNICATION SYSTEMS

356789 A \(100\;m\) long antenna is mounted on a \(500\;m\) tall building. The complex can become a transmission tower for waves with \(\lambda\)

1 \(25\;m\)
2 \(150\;m\)
3 \(2400\;m\)
4 \(400\;m\)
PHXII15:COMMUNICATION SYSTEMS

356786 A carrier wave of amplitude \(15\;V\) is modulated by a sinusoidal base band signal of amplitude \(3\;V\). The ratio of maximum amplitude to minimum amplitude in an amplitude modulated wave is

1 2
2 \(\dfrac{3}{2}\)
3 5
4 1
PHXII15:COMMUNICATION SYSTEMS

356787 In an amplitude modulation, a modulating signal having amplitude of \(X V\) is superimposed with a carrier signal of amplitude \(Y V\) in first case. Then, in second case, the same modulating signal is superimposed with different carrier signal of amplitude \(2\;Y\;V\). The ratio of modulation index in the two cases respectively will be

1 \(2: 1\)
2 \(1: 2\)
3 \(1: 1\)
4 \(4: 1\)
PHXII15:COMMUNICATION SYSTEMS

356788 The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as

1 Transmission
2 Reception
3 Modulation
4 Detection
PHXII15:COMMUNICATION SYSTEMS

356789 A \(100\;m\) long antenna is mounted on a \(500\;m\) tall building. The complex can become a transmission tower for waves with \(\lambda\)

1 \(25\;m\)
2 \(150\;m\)
3 \(2400\;m\)
4 \(400\;m\)
PHXII15:COMMUNICATION SYSTEMS

356786 A carrier wave of amplitude \(15\;V\) is modulated by a sinusoidal base band signal of amplitude \(3\;V\). The ratio of maximum amplitude to minimum amplitude in an amplitude modulated wave is

1 2
2 \(\dfrac{3}{2}\)
3 5
4 1
PHXII15:COMMUNICATION SYSTEMS

356787 In an amplitude modulation, a modulating signal having amplitude of \(X V\) is superimposed with a carrier signal of amplitude \(Y V\) in first case. Then, in second case, the same modulating signal is superimposed with different carrier signal of amplitude \(2\;Y\;V\). The ratio of modulation index in the two cases respectively will be

1 \(2: 1\)
2 \(1: 2\)
3 \(1: 1\)
4 \(4: 1\)
PHXII15:COMMUNICATION SYSTEMS

356788 The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as

1 Transmission
2 Reception
3 Modulation
4 Detection
PHXII15:COMMUNICATION SYSTEMS

356789 A \(100\;m\) long antenna is mounted on a \(500\;m\) tall building. The complex can become a transmission tower for waves with \(\lambda\)

1 \(25\;m\)
2 \(150\;m\)
3 \(2400\;m\)
4 \(400\;m\)
PHXII15:COMMUNICATION SYSTEMS

356786 A carrier wave of amplitude \(15\;V\) is modulated by a sinusoidal base band signal of amplitude \(3\;V\). The ratio of maximum amplitude to minimum amplitude in an amplitude modulated wave is

1 2
2 \(\dfrac{3}{2}\)
3 5
4 1
PHXII15:COMMUNICATION SYSTEMS

356787 In an amplitude modulation, a modulating signal having amplitude of \(X V\) is superimposed with a carrier signal of amplitude \(Y V\) in first case. Then, in second case, the same modulating signal is superimposed with different carrier signal of amplitude \(2\;Y\;V\). The ratio of modulation index in the two cases respectively will be

1 \(2: 1\)
2 \(1: 2\)
3 \(1: 1\)
4 \(4: 1\)
PHXII15:COMMUNICATION SYSTEMS

356788 The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as

1 Transmission
2 Reception
3 Modulation
4 Detection
PHXII15:COMMUNICATION SYSTEMS

356789 A \(100\;m\) long antenna is mounted on a \(500\;m\) tall building. The complex can become a transmission tower for waves with \(\lambda\)

1 \(25\;m\)
2 \(150\;m\)
3 \(2400\;m\)
4 \(400\;m\)