This is the Multiples Choice Questions Part 12 of the Series in Broadcasting and Cable TV System as one of the Communications Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies, Communications Books, Journals and other Communications References.
MCQ Topic Outline included in ECE Board Exam Syllabi
- MCQ in Radio Transmitter
- MCQ in AM and FM
- MCQ in Television
- MCQ in Studio (Microphone, Amplifiers, Cameras, Lighting, etc.)
- MCQ in Cable Television
Continue Practice Exam Test Questions Part 12 of the Series
Choose the letter of the best answer in each questions.
551. What is the process of sending voice, speech, music or image intended for reception by the general public?
A. Navigation
B. Telephony
C. Broadcasting
D. Mixing
Answer: Option C
Solution:
552. An additional channel of multiplex information that is authorized by the FCC for stereo FM radio stations to feed services such as commercial-free programming to selected customers.
A. STL
B. EBS
C. EIA
D. SCA
Answer: Option D
Solution:
553. The class of FM station, which has an authorized radiated power not exceeding 125 KW:
A. Class C
B. Class A
C. Class D
D. Class B
Answer: Option B
Solution:
554. An FM broadcast station, which has an authorized transmitter power not exceeding 10 KW and ERP not exceeding 30 KW:
A. Class D
B. Class C
C. Class A
D. Class B
Answer: Option D
Solution:
555. A class of FM station which is limited in antenna height of 500 ft. above average terrain
A. Class D
B. Class C
C. Class A
D. Class B
Answer: Option B
Solution:
556. What type of broadcast service might have their antennas on top of hills?
A. FM
B. AM
C. TV
D. A & C
Answer: Option D
Solution:
557. How are guard bands allocated in commercial FM stations?
A. 25 kHz on either sides of the transmitting signal
B. 50 kHz on each side of the carrier
C. 75 kHz deviation
D. 15 kHz modulation
Answer: Option A
Solution:
558. How many commercial FM broadcast channels can fit into the bandwidth occupied by a commercial TV station?
A. 10
B. 20
C. 30
D. 40
Answer: Option C
Solution:
559. How many international commercial AM broadcast channels can fit into the bandwidth occupied by a commercial TV station?
A. 100
B. 200
C. 125
D. 600
Answer: Option D
Solution:
560. What kind of modulation is used for the sound portion of a commercial broadcast TV transmission?
A. PM
B. FM
C. C3F
D. AM
Answer: Option B
Solution:
561. Estimate the bandwidth occupied by the sound portion of a TV transmission in US.
A. 25 kHz
B. 800 kHz
C. 80 kHz
D. 200 kHz
Answer: Option C
Solution:
562. What is the main reason why television picture signal uses amplitude modulation, while voice is frequency modulated?
A. Better efficiency
B. Eliminate attenuation of both video and audio
C. Maintain synchronized scanning between transmit and received video
D. To minimize interference between signals at received end
Answer: Option D
Solution:
563. The picture and sound carrier frequencies in a TV receiver are ________ respectively.
A. 41.25 MHz, 45.75 MHz
B. 45.25 MHz, 41.75 MHz
C. 41.75 MHz, 45.25 MHz
D. 45.75 MHz, 41.25 MHz
Answer: Option D
Solution:
564. What is the separation between visual and aural carrier in TV broadcasting?
A. 1.25 MHz
B. 4.5 MHz
C. 5.75 MHz
D. 0.25 MHz
Answer: Option B
Solution:
565. What is the separation between the lower limit of a channel and the aural carrier?
A. 1.25 MHz
B. 4.5 MHz
C. 5.75 MHz
D. 0.25 MHz
Answer: Option C
Solution:
566. What is the visual carrier for channel 12?
A. 205.25 MHz
B. 55.25 MHz
C. 65.75 MHz
D. 59.75 MHz
Answer: Option A
Solution:
567. What is the aural carrier for channel 3?
A. 61.25 MHz
B. 55.25 MHz
C. 65.75 MHz
D. 59.75 MHz
Answer: Option C
Solution:
568. What is color subcarrier for channel 2?
A. 68.83 MHz
B. 211.25 MHz
C. 58.83 MHz
D. 214.83 MHz
Answer: Option C
Solution:
569. If the sound carrier for UHF channel 23 is 529.75 MHz, what is the frequency of the tuner’s local oscillator, when turned to this channel?
A. 571 MHz
B. 511 MHz
C. 498 MHz
D. 500 MHz
Answer: Option A
Solution:
570. What is the frequency tolerance in the color carrier of TV broadcasting?
A. 2 kHz
B. 20 Hz
C. 10 Hz
D. 1 kHz
Answer: Option C
Solution:
571. What is the exact picture carrier frequency for frequency for channel 7 offset by – 10 KHz?
A. 175.25 MHz
B. 175.26 MHz
C. 174 MHz
D. 175.24 MHz
Answer: Option D
Solution:
572. TV channels 7, 11 and 13 are known as _________.
A. Mid band UHF
B. Low band UHF
C. High band VHF
D. low band UHF
Answer: Option C
Solution:
573. What is eliminated by using interlaced scanning?
A. Noise
B. Excessive BW
C. Frame
D. Flicker
Answer: Option D
Solution:
574. What percentage of the primary colors used in color TV are needed to produce the brightest white?
A. 30% red, 59% green, 11% blue
B. 33% red, 33% green, 33% blue
C. 50% red, 28% green, 22% blue
D. 58% red, 20% green, 22% blue
Answer: Option A
Solution:
575. The color with the most luminance is
A. Red
B. Yellow
C. Green
D. Blue
Answer: Option B
Solution:
576. Suppose the signal from a color camera has R = 0.8, G = 0.4 and B = 0.2, where 1 represents the maximum signal possible. Determine the value at the luminance signal
A. 0.498
B. 0.254
C. 0.1325
D. 1.4
Answer: Option A
Solution:
577. In the previous problem, calculate the chrominance signal
A. 0.305
B. 0.304
C. 0.498
D. 0.022
Answer: Option A
Solution:
578. The three complementary colors are:
A. White, yellow, cyan
B. Black, white, gray
C. Yellow, magenta, cyan
D. Violet, indigo, fuchsia
Answer: Option C
Solution:
579. When the colors Magenta and Yellow are mixed the resultant color is:
A. Red
B. White
C. Blue
D. Green
Answer: Option B
Solution:
580. Which of the following consist of two of the three primary colors in television signal? a) red, b) violet, c) yellow, and d) blue
A. A and B
B. B and C
C. C and D
D. A and D
Answer: Option B
Solution:
581. The studio camera produces a luminance signal that contains information about
A. The musical content
B. The speech content
C. The brightness of the scene
D. The color content of the scene
Answer: Option C
Solution:
582. Brightness variations of the picture information are in which signal?
A. I
B. Q
C. Y
D. Z
Answer: Option C
Solution:
583. Which of the following is the color video signal transmitted as amplitude modulation of the 3.58 MHz C signal with bandwidth of 0 to 1.3 MHz?
A. I signal
B. Q signal
C. Y signal
D. X signal
Answer: Option A
Solution:
584. Which of the following is the color video signal transmitted as amplitude modulation of the 3.58 MHz C signal in quadrature with bandwidth of 0 to 0.5 MHz?
A. I signal
B. Q signal
C. Y signal
D. Z signal
Answer: Option B
Solution:
585. The _________ affects the difference between black and white on the picture tube and controls the gain of the video amplifier
A. Brightness control
B. Volume control
C. Power control
D. Contrast control
Answer: Option D
Solution:
586. Which of the following is not a requirement for a color TV signal?
A. compatibility with black and white receivers
B. Within 6 MHz bandwidth
C. Simulate a wide variety of colors
D. Functional with baron super antenna
Answer: Option D
Solution:
587. How many electron beams actually leave the electron gun of a single-gun color CRT?
A. 1
B. 2
C. 3
D. 1/3
Answer: Option C
Solution:
588. What is the difference between the sound carrier and color subcarrier frequencies?
A. 1.25 MHz
B. 3.58 MHz
C. 4.5 MHz
D. 0.92 MHz
Answer: Option D
Solution:
589. What does aspect ratio mean?
A. Ratio of the screen width to its height
B. Ratio of the screen height to its width
C. Ratio of the screen diagonal to its width
D. Ratio of the screen diagonal to its height
Answer: Option A
Solution:
590. What is the aspect ratio for HDTV system?
A. 4/3
B. 9/7
C. 19/6
D. 16/9
Answer: Option D
Solution:
591. The signal that will give the exact color wavelength is _________.
A. Hue
B. Saturation
C. Carrier
D. Monochrome
Answer: Option A
Solution:
592. Which of the following represents the intensity of a given color?
A. Hue
B. Saturation
C. Carrier
D. Monochrome
Answer: Option B
Solution:
593. The ________ ensures that the electron beam will strike the correct phosphor dot on the TV screen.
A. Coating
B. Aperture Mask
C. Diplexer
D. Duplexer
Answer: Option B
Solution:
594. In a TV receiver, what is the horizontal signal frequency?
A. 30 Hz
B. 60 Hz
C. 15750 Hz
D. 157625 Hz
Answer: Option C
Solution:
595. In a TV receiver, what is the vertical signal frequency?
A. 30 Hz
B. 60 Hz
C. 15750 Hz
D. 157625 Hz
Answer: Option B
Solution:
596. What scheme is employed to cause the electron beam in the TV receiver and the electron beam in the studio camera to track identically?
A. Interlacing
B. NTSC
C. Interleaving
D. Transmission of sync pulses
Answer: Option D
Solution:
597. Equalizing pulses in TV are sent during
A. Horizontal blanking
B. Vertical blanking
C. The serrations
D. Equalizing intervals
Answer: Option B
Solution:
598. What is the return of the electron beam in a CRT from right to left or from bottom to top?
A. Relay
B. Flyback
C. Utilization
D. Resolution
Answer: Option B
Solution:
599. What is the North American TV standard video?
A. PAL
B. SECAM
C. NTSC
D. FCC
Answer: Option C
Solution:
600. What is the maximum allowable frequency deviation in the audio section of a TV signal for PAL/SECAM?
A. 25 kHz
B. 50 kHz
C. 75 kHz
D. 100 kHz
Answer: Option B
Solution:
Questions and Answers in Broadcasting and Cable TV System Series
Following is the list of multiple choice questions in this brand new series:
