Principles of Electronic Communication Systems 4th Edition
Frenzel Solutions Manual
A 5-frame TDM multiplexer has a total frame period of 625 Ps. If the timeslot per
channel is 5.208 Psec, determine the number of channels per frame and the total
number of digital channels.
A. 60, 12
B. 120, 24
C. 12, 60
D. 24, 120 - ANSWER: D
If the measured wavelength is 6 m, calculate the frequency in MHz.
A. 25 MHz
B. 10 MHz
C. 50 MHz
D. 100 MHz - ANSWER: C
If several musical instruments are playing the same note, you should be able to
distinguish one instrument from another because of which of the following
characteristics of sound?
A. Frequency
B. Intensity
C. Overtones
D. Quality - ANSWER: D
A large volume of light radiating in a given direction is referred to as a
A. pencil
B. beam
C. ray
D. shaft - ANSWER: B
What are the primary colors of light?
A. Red, blue, and green
B. Red, violet, and indigo
C. Blue, green, and violet
D. Red, blue, and yellow - ANSWER: A
noise is noise that has an equal amount of energy per octave.
A. Pink
B. Yellow
C. White
D. Blue - ANSWER: A
,is multi-channel capacity that is between 1.544 Mbps and 45 Mbps according to U.S.
standards (2.048 Mbps-34 Mbps according to European/international standards.)
A. Wideband
B. Baseband
C. Narrowband
D. Broadband - ANSWER: A
Based on ITU-R Recommendations V.431-6, the adjectival designation of 30 to 300
kHz is _____.
A. ELF
B. LF
C. ULF
D. VLF - ANSWER: B
The world's first operational packet switching network, and the progenitor of the
global Internet.
A. DECNET
B. ARPANET
C. ISDN
D. NMT - ANSWER: B
would have equal power in the frequency range from 40 to 60 Hz as in the band
from 4000 to 6000 Hz.
A. pink noise
B. blue noise
C. white noise
D. green noise - ANSWER: A
He hypothesized the existence of magnetic field around a current-carrying
conductor.
A. Michael Faraday
B. Nikola Tesla
C. Andre Marie Ampere
D. Karl Gauss - ANSWER: C
In FCC former designation, F3Y means ______.
A. Telegraphy; four-frequency duplex
B. Digital voice modulation
C. Telegraphy; FSK
D. Telephony; amplitude-modulated pulses - ANSWER: B
Based on ITU-R Recommendations V.431-6, the metric subdivision of 0.030 to 0.300
Hz is _____.
A. Decamegametric
B. Gigametric
C. Myriametric
D. Hectomegametric - ANSWER: B
, would have equal power in the frequency range from 40 to 60 Hz as in the band
from 4000 to 4020 Hz.
A. pink noise
B. blue noise
C. white noise
D. green noise - ANSWER: C
What is the wavelength for a color in the middle of the visible light band if the visible
light frequency range is from 0.39 PHz (red) to 0.79 PHz (violet)?
A. 5000 nm
B. 50 nm
C. 5
D. 500 nm - ANSWER: D
The person who sent the first radio signal across the Atlantic ocean was:
A. Marconi
B. Bell
C. Maxwell
D. Hertz - ANSWER: A
What percentage of the VHF band does a 6-MHz TV signal occupy?
A. 2.2%
B. 8.8%
C. 4.4%
D. 1.1% - ANSWER: A
How many AM stations can be accommodated in a 0.15 MHz BW if the allocated BW
per station is 10 KHz?
A. 100
B. 50
C. 150
D. 15 - ANSWER: D
How many international commercial AM broadcast channels (assume BW=10 KHz)
can fit into the bandwidth occupied by a commercial FM broadcast channel (assume
BW=200 KHz)?
A. 20
B. 200
C. 10
D. 5 - ANSWER: A
Determine the BW of sonic frequency range if the infrasonic frequency ends at 20 Hz
while ultrasonic frequency begins at 20, 000 Hz.
A. 4 kHz
C. 10 kHz
B. 8 kHz
Frenzel Solutions Manual
A 5-frame TDM multiplexer has a total frame period of 625 Ps. If the timeslot per
channel is 5.208 Psec, determine the number of channels per frame and the total
number of digital channels.
A. 60, 12
B. 120, 24
C. 12, 60
D. 24, 120 - ANSWER: D
If the measured wavelength is 6 m, calculate the frequency in MHz.
A. 25 MHz
B. 10 MHz
C. 50 MHz
D. 100 MHz - ANSWER: C
If several musical instruments are playing the same note, you should be able to
distinguish one instrument from another because of which of the following
characteristics of sound?
A. Frequency
B. Intensity
C. Overtones
D. Quality - ANSWER: D
A large volume of light radiating in a given direction is referred to as a
A. pencil
B. beam
C. ray
D. shaft - ANSWER: B
What are the primary colors of light?
A. Red, blue, and green
B. Red, violet, and indigo
C. Blue, green, and violet
D. Red, blue, and yellow - ANSWER: A
noise is noise that has an equal amount of energy per octave.
A. Pink
B. Yellow
C. White
D. Blue - ANSWER: A
,is multi-channel capacity that is between 1.544 Mbps and 45 Mbps according to U.S.
standards (2.048 Mbps-34 Mbps according to European/international standards.)
A. Wideband
B. Baseband
C. Narrowband
D. Broadband - ANSWER: A
Based on ITU-R Recommendations V.431-6, the adjectival designation of 30 to 300
kHz is _____.
A. ELF
B. LF
C. ULF
D. VLF - ANSWER: B
The world's first operational packet switching network, and the progenitor of the
global Internet.
A. DECNET
B. ARPANET
C. ISDN
D. NMT - ANSWER: B
would have equal power in the frequency range from 40 to 60 Hz as in the band
from 4000 to 6000 Hz.
A. pink noise
B. blue noise
C. white noise
D. green noise - ANSWER: A
He hypothesized the existence of magnetic field around a current-carrying
conductor.
A. Michael Faraday
B. Nikola Tesla
C. Andre Marie Ampere
D. Karl Gauss - ANSWER: C
In FCC former designation, F3Y means ______.
A. Telegraphy; four-frequency duplex
B. Digital voice modulation
C. Telegraphy; FSK
D. Telephony; amplitude-modulated pulses - ANSWER: B
Based on ITU-R Recommendations V.431-6, the metric subdivision of 0.030 to 0.300
Hz is _____.
A. Decamegametric
B. Gigametric
C. Myriametric
D. Hectomegametric - ANSWER: B
, would have equal power in the frequency range from 40 to 60 Hz as in the band
from 4000 to 4020 Hz.
A. pink noise
B. blue noise
C. white noise
D. green noise - ANSWER: C
What is the wavelength for a color in the middle of the visible light band if the visible
light frequency range is from 0.39 PHz (red) to 0.79 PHz (violet)?
A. 5000 nm
B. 50 nm
C. 5
D. 500 nm - ANSWER: D
The person who sent the first radio signal across the Atlantic ocean was:
A. Marconi
B. Bell
C. Maxwell
D. Hertz - ANSWER: A
What percentage of the VHF band does a 6-MHz TV signal occupy?
A. 2.2%
B. 8.8%
C. 4.4%
D. 1.1% - ANSWER: A
How many AM stations can be accommodated in a 0.15 MHz BW if the allocated BW
per station is 10 KHz?
A. 100
B. 50
C. 150
D. 15 - ANSWER: D
How many international commercial AM broadcast channels (assume BW=10 KHz)
can fit into the bandwidth occupied by a commercial FM broadcast channel (assume
BW=200 KHz)?
A. 20
B. 200
C. 10
D. 5 - ANSWER: A
Determine the BW of sonic frequency range if the infrasonic frequency ends at 20 Hz
while ultrasonic frequency begins at 20, 000 Hz.
A. 4 kHz
C. 10 kHz
B. 8 kHz
