Communication Systems - Part 1 Online Exam Quiz
Communication Systems - Part 1 GK Quiz. Question and Answers related to Communication Systems - Part 1. MCQ (Multiple Choice Questions with answers about Communication Systems - Part 1
A cordless telephone using separate frequencies for transmission in base and portable units is known as
Options
A : duplex arrangement
B : half duplex arrangement
C : either (a) or (b)
D : neither (a) nor (b)
For attenuation of high frequencies we should use
Options
A : shunt capacitance
B : series capacitance
C : inductance
D : resistance
A modem is classified as low speed if data rate handled is
Options
A : upto 100 bps
B : upto 250 bps
C : upto 400 bps
D : upto 600 bps
VSB modulation is preferred in TV because
Options
A : it reduces the bandwidth requirement to half
B : it avoids phase distortion at low frequencies
C : it results in better reception
D : none of the above
A woofer should be fed from the input through a
Options
A : low pass filter
B : high pass filter
C : band pass filter
D : band stop filter
The colour subcarrier and sidebands produced by its modulation with the chrominance signals are accommodated in the standard channel width by the process of
Options
A : frequency adjustment
B : frequency interleaving
C : frequency changing
D : frequency amalgamation
In FM signal with a modulation index m f is passed through a frequency tripler. The wave in the output of the tripler will have a modulation index of
Options
A : m f
B : 3 m f
C : m f /3
D : m f /9
In colour TV receiver, varactor diode is used for
Options
A : detection
B : rectification
C : tuning
D : both (a) and (b)
The number of noise sources in a BJT are
Options
A : 3
B : 2
C : 1
D : 4
Energy content of atmospheric noise
Options
A : does not depend on frequency
B : decreases as frequency is increased
C : increases as frequency is increased
D : either (a) or (c) depending on the temperature
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