|
What is the simplest form of pulse modulation?
|
|
0
|
170
|
June 8, 2022
|
|
To accurately reproduce a modulating signal in ___
|
|
0
|
144
|
June 8, 2022
|
|
To transmit intelligence using pulse modulation, which of the ___
|
|
0
|
154
|
June 8, 2022
|
|
Compared to a spark-gap modulator, the thyratron modulator exhibits ___
|
|
0
|
169
|
June 8, 2022
|
|
The damping diode in a thyratron modulator serves which of the following purposes?
|
|
0
|
161
|
June 8, 2022
|
|
In a spark-gap modulator, what is the function of the pulse-forming network?
|
|
0
|
224
|
June 8, 2022
|
|
When pulse modulation is used for range finding in ___
|
|
0
|
198
|
June 8, 2022
|
|
In pulse modulation, what term is used to indicate the ratio of ___
|
|
0
|
149
|
June 8, 2022
|
|
Average power in a pulse-modulation system is defined as the
|
|
0
|
237
|
June 8, 2022
|
|
In a square-wave modulated signal, total sideband power is what percentage of the total power?
|
|
0
|
191
|
June 8, 2022
|
|
As the square wave modulating voltage is increased to the same amplitude as ___
|
|
0
|
181
|
June 8, 2022
|
|
When a carrier is modulated by a square wave, what maximum number of ___
|
|
0
|
237
|
June 8, 2022
|
|
Which of the following circuits is used to generate a phase-shift keyed signal?
|
|
0
|
177
|
June 8, 2022
|
|
When a carrier is phase-shift keying modulated ___
|
|
0
|
166
|
June 8, 2022
|
|
Phase-shift keying is most useful under which of the following code element conditions?
|
|
0
|
144
|
June 8, 2022
|
|
A simple phase modulator consists of a capacitor in ___
|
|
0
|
162
|
June 8, 2022
|
|
The primary advantage of phase modulation over frequency modulation is ___
|
|
0
|
286
|
June 8, 2022
|
|
Compared to fm, increasing the modulating frequency in ___
|
|
0
|
154
|
June 8, 2022
|
|
The frequency spectrums of a phasemodulated signal resemble the ___
|
|
0
|
190
|
June 8, 2022
|
|
In phase modulation, (a) the AMPLITUDE of the modulating signal determines ___
|
|
0
|
143
|
June 8, 2022
|
|
In a phase modulator, the frequency during the constant-amplitude portion of ___
|
|
0
|
159
|
June 8, 2022
|
|
A 10 kilohertz, 10-volt square wave is applied as the phase-modulating signal to ___
|
|
0
|
129
|
June 8, 2022
|
|
As the positive potential is increased on the cathode of ___
|
|
0
|
147
|
June 8, 2022
|
|
A varactor is a variable device that acts as which of the following components?
|
|
0
|
139
|
June 8, 2022
|
|
To ensure the frequency stability of ___
|
|
0
|
128
|
June 8, 2022
|
|
A multivibrator frequency modulator is limited to frequencies ___
|
|
0
|
154
|
June 8, 2022
|
|
What type of circuit is used to remove the AM component in ___
|
|
0
|
270
|
June 8, 2022
|
|
The reactance-tube frequency modulates the oscillator by which of the following actions?
|
|
0
|
121
|
June 8, 2022
|
|
With no modulating signal applied, a reactance tube has ___
|
|
0
|
160
|
June 8, 2022
|
|
In a reactance-tube modulator, the reactance tube ___
|
|
0
|
177
|
June 8, 2022
|