This is the Multiples Choice Questions Part 2 of the Series in Basic Television – Grob TV as one of the Electronics 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 Exam Questions in Electronics Engineering field, Electronics Books, Journals and other Electronics References.
Continue Practice Exam Test Questions Part 2 of the Series
Choose the letter of the best answer in each questions.
51. The R, G, and B video drive controls are set for __________ in the picture.
A. dark gray
B. white
C. black
D. green
Answer: Option B
Solution:
52. Background controls of many picture tubes are for the
A. ac bias
B. dc bias
C. ac video signal
D. dc video signal
Answer: Option B
Solution:
53. The G2 master screen control of picture tubes vary the
A. ac voltage
B. dc voltage
C. ac video signal
D. dc video signal
Answer: Option B
Solution:
54. In the sawtooth waveform for linear scanning
A. the linear rise if for flyback
B. the complete cycle includes trace and retrace
C. the sharp reversal in amplitude produces trace
D. the beam moves faster during trace than retrace.
Answer: Option B
Solution:
55. Given a 635 us vertical retrace time, the number of complete horizontal lines scanned during vertical flyback is
A. 10
B. 20
C. 30
D. 63
Answer: Option A
Solution:
56. One-half line spacing between the start position for scanning even and odd fields produces
A. linear scanning
B. line pairing
C. fishtailing
D. exact interlacing
Answer: Option D
Solution:
57. The number of lines scanned per frame in the raster on the picture tube screen is
A. 525
B. 262
C. 20
D. 10
Answer: Option A
Solution:
58. In the frame for which interlaced scanning is used, alternate lines are skipped during vertical scanning because
A. the trace is slower than the retrace
B. the vertical scanning frequency is doubled from 30 to 60 Hz
C. The horizontal scanning is slower than vertical scanning
D. the frame has a 4:3 aspect ratio
Answer: Option B
Solution:
59. If the horizontal flyback is 10 percent, this time equals
A. 10 µs
B. 56 µs
C. 6.4 µs
D. 83 µs
Answer: Option C
Solution:
60. Which of the following is NOT true?
A. line pairing indicates poor interlacing.
B. People look too tall and too thin on a square raster on the picture tube screen.
C. A person can appear to have one shoulder wider than the other because of nonlinear horizontal scanning.
D. the keystone effect produces a square raster.
Answer: Option D
Solution:
61. The width of a vertical sync pulse with its narrations includes the time of
A. six half-lines, or three lines
B. five lines
C. three half-lines
D. five half-lines
Answer: Option A
Solution:
62. Sawtooth generator circuits produce the scanning raster, but the sync pulses are needed for
A. linearity
B. timing
C. keystoning
D. line Pairing
Answer: Option B
Solution:
63. Which of the following frequencies is wrong?
A. 15,750 Hz for horizontal sync and scanning
B. 60 Hz for vertical sync and scanning
C. 31,500 Hz for equalizing pulses and serrations in the vertical sync pulses
D. 31,500 Hz for the vertical scanning frequency
Answer: Option D
Solution:
64. Which of the following is faster in horizontal scanning?
A. trace
B. retrace
C. flyback
D. retrace or flyback
Answer: Option D
Solution:
65. Which of the following takes more time?
A. H retrace
B. H trace
C. V retrace
D. V trace
Answer: Option C
Solution:
66. What does an interlaced scanning require for the number of the horizontal lines?
A. odd
B. Even
C. Both odd and even simultaneously
D. Either odd or even
Answer: Option A
Solution:
67. How many horizontal lines are in the odd or an even field?
A. 10 ½
C. 525 lines
B. 262 ½ lines
D. 600 lines
Answer: Option B
Solution:
68. How many H lines are there in a complete frame?
A. 19 lines
B. 21 lines
C. 262 ½ lines
D. 600 lines
Answer: Option B
Solution:
69. How many H lines are there in each field?
A. 8 ½ lines
B. 10 ½ lines
C. 262 ½ lines
D. 325 lines
Answer: Option B
Solution:
70. How many H lines are there in each V retrace?
A. One
B. two
C. three
D. four
Answer: Option A
Solution:
71. What are the frequencies of V scanning, V sync, and V blanking?
A. 30 Hz
B. 60 Hz
C. 90 Hz
D. 360 Hz
Answer: Option B
Solution:
72. What are the frequencies of H scanning, H sync and H blanking?
A. 15,750 Hz
B. 16,750 Hz
C. 31,500 Hz
D. 30,050 Hz
Answer: Option A
Solution:
73. In video signal analysis, what are the three parts of the composite video signal, for two horizontal lines in the picture?
A. Camera signal
B. H sync C. H blanking
C. H blanking
D. all of these
Answer: Option D
Solution:
74. In the IRE scale for composite video signal, list the number of IRE units used for sync, black setup, and the camera signal?
A. 40, 7.5, 92.5 respectively
B. 92.5, 40, 7.5 respectively
C. 7.5, 40, 92.5 respectively
D. 92.5, 7.5,40 respectively
Answer: Option A
Solution:
75. What are the approximate time periods for the width of H blanking pulse in microseconds?
A. 5
B. 0.93
C. 10.2
D. 53.5
Answer: Option C
Solution:
76. What are the approximate time periods for the visible H trace?
A. 5
B. 0.93
C. 10.2
D. 53.5
Answer: Option D
Solution:
77. What are the approximate time periods for the width of H sync pulse?
A. 5
B. 0.93
C. 10.2
D. 53.5
Answer: Option A
Solution:
78. Which pulses in V blacking correspond to the 3H lines wide?
A. V sync
B. V blanking
C. Equalizing
D. all of these
Answer: Option A
Solution:
79. Which pulses in V blanking correspond to the 21H lines wide?
A. V sync
B. V blanking
C. Equalizing
D. all of these
Answer: Option B
Solution:
80. Which pulses in V blacking correspond to the 31,500 Hz?
A. V sync
B. V blanking
C. Equalizing
D. all of these
Answer: Option C
Solution:
81. Give the maximum number of picture details for each horizontal line.
A. 338
B. 426
C. 125,000
D. 144,000
Answer: Option B
Solution:
82. Give the maximum number of picture details for total picture area.
A. 338
B. 426
C. 125,000
D. 144,000
Answer: Option D
Solution:
83. The average dc level is close to the blanking level for a scene?
A. light
B. dark
C. either dark or light
D. neither dark nor light
Answer: Option B
Solution:
84. In what condition does the picture tube reproduce black?
A. maximum beam current
B. minimum beam current
C. zero beam current
D. none of these
Answer: Option C
Solution:
85. The gamma effects the of the picture tube.
A. contrast
B. Brightness
C. dullness
D. either the brightness or contrast
Answer: Option A
Solution:
86. Picture tube has games which is .
A. greater than 1
B. less than 1
C. infinity
D. zero
Answer: Option A
Solution:
87. Brightness variations of the picture information are in which signal?
A. 1
B. Q
C. Y
D. R-Y
Answer: Option C
Solution:
88. The hue 180º out of phase with red is
A. cyan
B. yellow
C. green
D. blue
Answer: Option A
Solution:
89. Greater p-p amplitude of the 3.58MHz chrominance signal indicates more
A. white
C. hue
B. yellow
D. saturation
Answer: Option D
Solution:
90. The interfering beat frequency of 920 kHz is between the 3.58 MHz color subcarrier and the
A. 4.5 MHz intercarrier sound
B. picture carrier
C. lower adjacent sound
D. upper adjacent picture
Answer: Option A
Solution:
91. The hue of color sync phase is
A. red
B. cyan
C. blue
D. yellow-green
Answer: Option D
Solution:
92. Which signal has color information for 1.3 MHz bandwidth?
A.I
B. Y
C. R-Y
D. B-Y
Answer: Option A
Solution:
93. Which of the following is false?
A. the I video hues are orange or cyan
B. The transmitter matrix output includes Y, I, and Q video
C. A three-gun picture tube that can serve as a matrix.
D. a fully saturated color is mostly white
Answer: Option D
Solution:
94. The color with the most luminance is
A. red
B. yellow
C. green
D. blue
Answer: Option B
Solution:
95. What is the hue of a color 90° leading sync burst phase?
A. yellow
B. cyan
C. Blue
D. Orange
Answer: Option B
Solution:
96. The average voltage value of the 3.58 MHz modulated chrominance signal is
A. zero for most colors
B. close to black for yellow
C. the brightness of the color
D. the saturation of the color
Answer: Option C
Solution:
97. The second IF value for color in receivers, for any station, is
A. 0.5 MHz
B. 1.3 MHz
C. 3.58 MHz
D. 4.5 MHz
Answer: Option C
Solution:
98. if the 3.58-MHz C amplifier in the receiver does not operate, the result will be
A. no color
B. no red
C. too much blue
D. too much yellow
Answer: Option A
Solution:
99. How many octaves is the frequency range 1 to 8 MHz?
A. 1
B. 2
C. 3
D. 8
Answer: Option C
Solution:
100. Which system can be used for both recording and playback?
A. CEO
B. VHD
C. Laser disk
D. VHS
Answer: Option D
Solution:
Questions and Answers in Basic Television (Grob TV)
Following is the list of multiple choice questions in this brand new series:
SEE ALSO: Complete List of Basic Television – Grob TV Chapter Exercises
Complete List of MCQs in Electronics Engineering per topic
Related Content
P inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. Also provides professionals with materials for their lectures and practice exams. Help me go forward with the same spirit.
“Will you subscribe today via YOUTUBE?”
TIRED OF ADS?
- Become Premium Member and experienced complete ads-free content browsing.
- Full Content Access to Premium Solutions Exclusive for Premium members
- Access to PINOYBIX FREEBIES folder
- Download Reviewers and Learning Materials Free
- Download Content: You can see download/print button at the bottom of each post.
PINOYBIX FREEBIES FOR PREMIUM MEMBERSHIP:
- CIVIL ENGINEERING REVIEWER
- CIVIL SERVICE EXAM REVIEWER
- CRIMINOLOGY REVIEWER
- ELECTRONICS ENGINEERING REVIEWER (ECE/ECT)
- ELECTRICAL ENGINEERING & RME REVIEWER
- FIRE OFFICER EXAMINATION REVIEWER
- LET REVIEWER
- MASTER PLUMBER REVIEWER
- MECHANICAL ENGINEERING REVIEWER
- NAPOLCOM REVIEWER
- Additional upload reviewers and learning materials are also FREE
FOR A LIMITED TIME
If you subscribe for PREMIUM today!
You will receive an additional 1 month of Premium Membership FREE.
For Bronze Membership an additional 2 months of Premium Membership FREE.
For Silver Membership an additional 3 months of Premium Membership FREE.
For Gold Membership an additional 5 months of Premium Membership FREE.
Join the PinoyBIX community.
