Es&t020
This QUIZ is made or by product of my continuous research & study about Electronics Engineering to help the Electronics Engineer/Technician Aspirants in passing the Board Examinations.
- 1.
NTSC stands for:
- A.
National Television Systems Commission
- B.
National Television Systems Committee
- C.
National Television Systems Council
- D.
Nippon Television Systems Commission
Correct Answer
B. National Television Systems Committee -
- 2.
The NTSC specification was drawn up by the:
- A.
FCC
- B.
IRE
- C.
EIA
- D.
IEEE
Correct Answer
C. EIA -
- 3.
RGB stands for:
- A.
Red-Green Burst
- B.
Red-Green Brightness
- C.
Red-Green Bandwidth
- D.
Red-Green-Blue
Correct Answer
D. Red-Green-Blue -
- 4.
The number of scan lines in an NTSC signal is:
- A.
525
- B.
625
- C.
1024
- D.
1250
Correct Answer
A. 525 -
- 5.
The number of NTSC frames sent per second is:
- A.
25
- B.
30
- C.
50
- D.
60
Correct Answer
B. 30 -
- 6.
The number of NTSC fields sent per second is:
- A.
25
- B.
30
- C.
50
- D.
60
Correct Answer
D. 60 -
- 7.
The aspect ratio of a standard TV receiver is:
- A.
3:4
- B.
4:3
- C.
525:625
- D.
625:525
Correct Answer
B. 4:3 -
- 8.
Luminance refers to:
- A.
Brightness
- B.
Contrast
- C.
Chroma
- D.
Raster
Correct Answer
A. Brightness -
- 9.
Luminance is measured in:
- A.
Foot-candles
- B.
Lumins
- C.
IRE units
- D.
NTSC units
Correct Answer
C. IRE units -
- 10.
The maximum luminance level is called:
- A.
Max white
- B.
Peak white
- C.
All white
- D.
Whiter than white
Correct Answer
B. Peak white -
- 11.
The blanking level corresponds to a luminance of:
- A.
White
- B.
Black
- C.
Whiter than white
- D.
Blacker than black
Correct Answer
B. Black -
- 12.
The sync pulse level corresponds to a luminance of:
- A.
White
- B.
Black
- C.
Whiter than white
- D.
Blacker than black
Correct Answer
D. Blacker than black -
- 13.
The vertical blanking pulse is serrated to:
- A.
Maintain horizontal sync
- B.
Maintain vertical sync
- C.
Equalize the DC level
- D.
All of the above
Correct Answer
A. Maintain horizontal sync -
- 14.
When measured in lines, horizontal resolution:
- A.
Is greater than vertical resolution
- B.
Is about the same as vertical resolution
- C.
Is less than vertical resolution
- D.
Horizontal resolution is not measured in lines
Correct Answer
B. Is about the same as vertical resolution -
- 15.
The smallest picture element is called a:
- A.
Dot
- B.
Pic
- C.
Pixel
- D.
Row
Correct Answer
C. Pixel -
- 16.
In a color TV receiver, Y I Q refers to:
- A.
Luminance signal, in-phase color component, quadrature phase color component
- B.
Composite color signal, in-phase color component, quadrature phase color component
- C.
Composite video signal, in-phase video component, quadrature video color component
- D.
A method of demodulating stereo sound
Correct Answer
A. Luminance signal, in-phase color component, quadrature phase color component -
- 17.
Compared to the luminance signal, the horizontal resolution for color is:
- A.
Much greater
- B.
About the same
- C.
Much less
- D.
Resolution does not apply to color
Correct Answer
C. Much less -
- 18.
The modulation used for the video signal in a standard NTSC color TV receiver is:
- A.
SSB
- B.
Vestigial sideband AM
- C.
Suppressed-carrier AM
- D.
FM
Correct Answer
B. Vestigial sideband AM -
- 19.
The modulation used for the audio signal in a standard NTSC color TV receiver is:
- A.
SSB
- B.
Vestigial sideband AM
- C.
Suppressed-carrier AM
- D.
FM
Correct Answer
D. FM -
- 20.
The modulation used for the chroma signal in a standard NTSC color TV receiver is:
- A.
SSB
- B.
Vestigial sideband AM
- C.
Suppressed-carrier AM
- D.
FM
Correct Answer
C. Suppressed-carrier AM -
- 21.
The function of the "color burst" is to:
- A.
Detect the presence of a color video signal
- B.
Regenerate the color sub-carrier
- C.
To synchronize the color demodulation line by line
- D.
All of the above
Correct Answer
D. All of the above -
- 22.
SAP stands for:
- A.
Separate audio program
- B.
Separate audio pulse
- C.
Sync amplitude pulse
- D.
Sync audio pulse
Correct Answer
A. Separate audio program -
- 23.
The horizontal output transformer is also called:
- A.
The isolation transformer
- B.
The video transformer
- C.
The flyback transformer
- D.
The yoke
Correct Answer
C. The flyback transformer -
- 24.
Compared to a monochrome CRT, the accelerating voltage on a color CRT is:
- A.
About the same
- B.
Much higher
- C.
Much lower
- D.
Color CRTs use magnetic acceleration
Correct Answer
B. Much higher -
- 25.
Deflection in CRTs used in TV receivers is done:
- A.
Magnetically for both vertical and horizontal
- B.
Electrostatically for both vertical and horizontal
- C.
Electrostatically for vertical and magnetically for horizontal
- D.
Magnetically for vertical and electrostatically for horizontal
Correct Answer
A. Magnetically for both vertical and horizontal -
- 26.
AFPC stands for:
- A.
Allowed full picture chroma
- B.
Automatic frequency and phase control
- C.
Automatic frequency and picture control
- D.
None of the above
Correct Answer
B. Automatic frequency and phase control -
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-
Current Version
-
May 17, 2017Quiz Edited by
ProProfs Editorial Team -
Sep 24, 2012Quiz Created by
Catherine Halcomb
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