It refers to how long it takes for a current carrier such as a hole or electron
to move from the input to the output.

Response: Transmit-time Noise

Correct answer: Transmit-time Noise

Score: 2 out of 2 Yes

Question 2
 Statement I: The intelligence signal will be converted as modulated carrier through low-frequency carrier oscillator
and modulator.
Statement II The modulated carrier is amplified and sent to the antenna

Response: Only statement II is correct

Correct answer: Only statement II is correct

Score: 3 out of 3 Yes

Question 3
 Statement I Normal range of human speech is at Very low frequency
Statement II Very low frequency has a frequency of 3-30kHz

Response: Only statement II is correct

Correct answer: Only statement II is correct

Score: 3 out of 3 Yes

Question 4
 Statement I Undesired current or voltages that occur in a circuit are called Noise.
Statement II  Circuits that can transmit and receive signals are called Receiver

Response: Only statement I is true

Correct answer: Only statement I is true

Score: 3 out of 3 Yes

Question 5
 It is the number of waves that pass a fixed point in unit time

Response: Frequency

Correct answer: Frequency

Score: 2 out of 2 Yes

Question 6
 It is a circuit that accepts signals or data in and translates them into a form that can be transmitted, usually over a distance.

Response: Transmitter

Correct answer: Transmitter

Score: 2 out of 2 Yes

Question 7
 It is the total span of frequencies and wavelengths used in communication systems.
It is divided into different section bands

Response: Electromagnetic Spectrum

Correct answer: Electromagnetic Spectrum

Score: 2 out of 2 Yes

Question 8
 It is a high-frequency signal, usually a sine-wave generated by an oscillator.

Response: Carrier

Correct answer: Carrier

Score: 2 out of 2 Yes

Question 9
 He discovered radio waves in 1887

Response: Heinrich Hertz

Correct answer: Heinrich Hertz

Score: 2 out of 2 Yes

Question 10
 Stetement I: Atmospheric noise is one classification of Internal noise
Statement II: a solar noise is one classification of Extraterrestrial Noise

Response: Only statement II is correct

Correct answer: Only statement II is correct

Score: 3 out of 3 Yes

Question 11
 It means that data can be transmitted in both directions on a signal carrier, but not at the same time.

Response: Half Duplex

Correct answer: Half Duplex

Score: 2 out of 2 Yes

Question 12
 Statement I: Flicker Noise refers to how long it takes for a current carrier such as a hole or electron
to move from the input to the output.
Statement II: Transmit-time Noiseis the type of noise which is strongest at lower frequencies generally below a
few kHz. The spectral density of this noise increases as the frequency decreases.

Response: Only statement I is false

Correct answer: Both statement are false

Score: 0 out of 3 No

Question 13
 It is a two-way communication system where both parties can talk and listen simultaneously

Response: Full Duplex

Correct answer: Full Duplex

Score: 2 out of 2 Yes

Question 14
 Statement I: The circuit used for producing AM is called demodulator.
Statement II: Modulator changes a higher frequency modulating signal to a lower frequency signal.

Response: Both statement are false

Correct answer: Both statement are false

Score: 3 out of 3 Yes

Question 15
 It is the decrease in magnitude of a current, voltage or power of a signal in transmission between points because of the transmission medium.

Response: Attenuation

Correct answer: Attenuation

Score: 2 out of 2 Yes

Question 16
 It is a unit of measurement of the human hearing response.

Response: Decibels

Correct answer: Decibels

Score: 2 out of 2 Yes

Question 17
 Statement I: Source Encoder converts the message signal into a sequence of bits.
Statement II: processes the estimated information bits to obtain an estimate of the message.

Response: Only statement I is true

Correct answer: Both statement are true

Score: 0 out of 3 No

Question 18
 iIt s the process of varying one or more properties of a periodic waveform, called the carrier signal,

Response: Modulation

Correct answer: Modulation

Score: 2 out of 2 Yes

Question 19
 It is the electrical disturbances that occur in the earth’s atmosphere, often referred
to as static which usually comes from lightning.

Response: Atmospheric Noise

Correct answer: Atmospheric Noise

Score: 2 out of 2 Yes

Question 20
 It is measured as the amount of data that can be transferred from one point to another within a network in a specific amount of time.

Response: Bandwidth

Correct answer: Bandwidth

Score: 2 out of 2 Yes

Question 21
 It is a basic unit of data/message used in digital communications.

Response: Information Bit

Correct answer: Information Bit

Score: 2 out of 2 Yes

Question 22
 The distance between corresponding points of two consecutive waves

Response: Wavelength

Correct answer: Wavelength

Score: 2 out of 2 Yes

Question 23
 Statement I: Sidebands occur at frequencies that are the sum and difference of the carrier and modulating frequencies,
Statement II: Sidebands are new signals at different frequencies generated whenever a carrier is modulated by an
information signal.

Response: Both statement are true

Correct answer: Both statement are true

Score: 3 out of 3 Yes

Question 24
 It accepts the transmitted signal from the medium and convert it back to a form
understandable by human.

Response: Receiver

Correct answer: Receiver

Score: 2 out of 2 Yes

Question 25
 Noise that is produced by manufactured equipment, such as automotive ignition systems,
electric motors and generators.

Response: Industrial Noise

Correct answer: Industrial Noise

Score: 2 out of 2 Yes

Question 26
 Statement I The resulting signal from the process of amplitude modulation is called AM wave.
Statement II The signal containing intelligence or information to be transmitted are called modulating signal

Response: Both statement are true

Correct answer: Both statement are true

Score: 3 out of 3 Yes

Question 27
 It is a modulation technique in which the modulating signal varies the
amplitude of a sinusoidal carrier signal.

Response: Amplitude Modulation

Correct answer: Amplitude Modulation

Score: 2 out of 2 Yes

Question 28
 It is simply the act of transferring information from one place, person or group to another

Response: Communication

Correct answer: Communication

Score: 2 out of 2 Yes

Question 29
 Statement I: The relationship between modulating signal voltage, and carrier voltage is known as modulation index
Statement II: Distortion will occur if did not exceeds one (1)

Response: Only Statement I is True

Correct answer: Only Statement I is True

Score: 3 out of 3 Yes

Question 30
 It is the amplification of a signal.

Response: Gain

Correct answer: Gain