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The detector circuit in the figure uses the heterodyning principle to ___
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0
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20
|
June 10, 2022
|
|
Assume that two signals are received, one at 500 kHz and ___
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0
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19
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June 10, 2022
|
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To aid in distinguishing between two or more cw signals that are close to ___
|
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0
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17
|
June 10, 2022
|
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In the figure, L and C1 form a frequency selective network that serves what purpose?
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0
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22
|
June 10, 2022
|
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In cw demodulation, the first requirement of the circuit is the ability to ___
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0
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13
|
June 8, 2022
|
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In a demodulator circuit, which of the following components is ___
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0
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23
|
June 8, 2022
|
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When a demodulator fails to accurately recover intelligence from a modulated ___
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0
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22
|
June 8, 2022
|
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The process of recreating the original modulating frequencies (intelligence) from ___
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0
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17
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June 8, 2022
|
|
Which of the following is a characteristic of a pcm system that makes ___
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0
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23
|
June 8, 2022
|
|
A pcm system is capable of transmitting 32 standard levels that ___
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0
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20
|
June 8, 2022
|
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The process of arbitrarily dividing a wave into a series of ___
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0
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16
|
June 8, 2022
|
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A pfm transmitter transmits 10,000 pulses per second without ___
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0
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25
|
June 8, 2022
|
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Which, if any, of the following is the primary disadvantage of pulse-position modulation?
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0
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22
|
June 8, 2022
|
|
The same pulse characteristic is varied in which of the following types of pulse modulations?
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0
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25
|
June 8, 2022
|
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What is the simplest form of pulse modulation?
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0
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16
|
June 8, 2022
|
|
To accurately reproduce a modulating signal in ___
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0
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18
|
June 8, 2022
|
|
To transmit intelligence using pulse modulation, which of the ___
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0
|
15
|
June 8, 2022
|
|
Compared to a spark-gap modulator, the thyratron modulator exhibits ___
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0
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22
|
June 8, 2022
|
|
The damping diode in a thyratron modulator serves which of the following purposes?
|
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0
|
18
|
June 8, 2022
|
|
In a spark-gap modulator, what is the function of the pulse-forming network?
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0
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15
|
June 8, 2022
|
|
When pulse modulation is used for range finding in ___
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0
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19
|
June 8, 2022
|
|
In pulse modulation, what term is used to indicate the ratio of ___
|
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0
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12
|
June 8, 2022
|
|
Average power in a pulse-modulation system is defined as the
|
|
0
|
14
|
June 8, 2022
|
|
In a square-wave modulated signal, total sideband power is what percentage of the total power?
|
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0
|
13
|
June 8, 2022
|
|
As the square wave modulating voltage is increased to the same amplitude as ___
|
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0
|
21
|
June 8, 2022
|
|
When a carrier is modulated by a square wave, what maximum number of ___
|
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0
|
21
|
June 8, 2022
|
|
Which of the following circuits is used to generate a phase-shift keyed signal?
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0
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11
|
June 8, 2022
|
|
When a carrier is phase-shift keying modulated ___
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0
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21
|
June 8, 2022
|
|
Phase-shift keying is most useful under which of the following code element conditions?
|
|
0
|
12
|
June 8, 2022
|
|
A simple phase modulator consists of a capacitor in ___
|
|
0
|
28
|
June 8, 2022
|
