GROB TV_ppt.ppt

GROB TV Compiled and Edited BY:

ALDREEN M. QUIRIT, CCNA

( BSECE-MAPUA)

• Which of the following camera tubes uses lead oxide (PbO) for the photoconductive target plate?

A. VidiconB. PlumbiconC. SaticonD. Image Orthicon

• Which of the following camera tubes uses lead oxide (PbO) for the photoconductive target plate?

• Camera signal output without sync is called

A. blank burstB. generator lock videoC. composite video D. noncomposite video

• Camera signal output without sync is called

A. blank burstB. generator lock videoC. composite video D. noncomposite video

• A low-contrast picture in which white seems flat and lacking in details suggests

A. low beam currentB. high gain in preamplifierC. excessive gamma D. insufficient scanning width

• A low-contrast picture in which white seems flat and lacking in details suggests

A. low beam currentB. high gain in preamplifierC. excessive gamma D. insufficient scanning width

• Which of the following camera tubes has

minimum lag?

• Which of the following camera tubes has

minimum lag?

• The part of the visible spectrum where camera pickup tubes have the greatest output is

A. redB. blueC. yellow-greenD. infrared

• The part of the visible spectrum where camera pickup tubes have the greatest output is

A. redB. blueC. yellow-greenD. infrared

• Precise scanning size and linearity are most important in

A. a black-and-white cameraB. a plumbiconC. a single-tube color pickupD. a saticon

• Precise scanning size and linearity are most important in

A. a black-and-white cameraB. a plumbiconC. a single-tube color pickupD. a saticon

• Beam alignment magnets for the camera tube

are adjusted while rocking which control?

A. Optical focusB. Electrical focusC. Beam currentD. Shading

• Beam alignment magnets for the camera tube are adjusted while rocking which control?

A. Optical focusB. Electrical focusC. Beam currentD. Shading

• Special effects and production switching are done by the

A. CCUB. ENG cameraC. SEGD. Sync generator

• Special effects and production switching are done by the

A. CCUB. ENG cameraC. SEGD. Sync generator

• The gamma of the picture is

A. 0.4545B. 1.0C. 1.4D. 2.2

• The gamma of the picture is

A. 0.4545B. 1.0C. 1.4D. 2.2

• If the camera cannot be placed far away

enough to include everything in the scene, change the lens to one with a

A. lower f ratingB. higher f ratingC. longer focal length D. shorter focal length

• If the camera cannot be placed far away

enough to include everything in the scene, change the lens to one with a

A. lower f ratingB. higher f ratingC. longer focal length D. shorter focal length

• A typically value of vidicon dark current is

A. 0.2 uAB. about 200 uAC. 8 mAD. 800 mA

• A typically value of vidicon dark current is

A. 0.2 uAB. about 200 uAC. 8 mAD. 800 mA

• A lens has an 8-cm focal and 4-cm diameter.

Its f rating is

A.2B. 4C. 8D. 32

• A lens has an 8-cm focal and 4-cm diameter.

Its f rating is

A.2B. 4C. 8D. 32

• Which of the following is FALSE?

A. The lens inverts the optical image on the faceplate of the camera tube

B. The composite video signal includes the camera signal and sync but not blanking

C. The standard composite video signal from a camera is 1 Vpp with negative sync

D. The plumbicon uses a lead oxide layer for the target plate

• Which of the following is FALSE?

A. The lens inverts the optical image on the faceplate of the camera tube

B. The composite video signal includes the camera signal and sync but not blanking

C. The standard composite video signal from a camera is 1 Vpp with negative sync

D. The plumbicon uses a lead oxide layer for the target plate

• Which of the following is TRUE?

A. The diameter of the vidicon image plate is about 5 in. (127 mm)

B. The plumbicon camera tube uses a silicon target plate

C. The composite video signal includes the camera signal and sync but not blanking

D. The lens inverts the optical image on the faceplate of the camera tube

A. The diameter of the vidicon image plate is about 5 in. (127 mm)

B. The plumbicon camera tube uses a silicon target plate

C. The composite video signal includes the camera signal and sync but not blanking

D. The lens inverts the optical image on the faceplate of the camera tube

• Which of the following produces the signal variations for G4 of the vidicon?

A. Target PlateB. Wire MeshC. MuzzleD. Beam Control

• Which of the following produces the signal variations for G4 of the vidicon?

A. Target PlateB. Wire MeshC. MuzzleD. Beam Control

• What is the gamma required for the camera tube?

A. 2.2B. 0.4545C. 4.545D. 0.22

• What is the gamma required for the camera tube?

A. 2.2B. 0.4545C. 4.545D. 0.22

• _______ is more important for the gamma correction for the camera tube.

A. ColorB. MonochromeC. Both Color and MonochromeD. either of Color or Monochrome

• _______ is more important for the gamma correction for the camera tube.

A. ColorB. MonochromeC. Both Color and MonochromeD. either of Color or Monochrome

• In gamma correction, the ____ is stretched by the picture tube.

A. blackB. grayC. whiteD. red

• In gamma correction, the ____ is stretched by the picture tube.

A. blackB. grayC. whiteD. red

• To how many lax units is the illumination of 3 fc approximately equal to?

A. 650B. 225C. 65D. 30

• To how many lax units is the illumination of 3 fc approximately equal to?

A. 650B. 225C. 65D. 30

• What is the diagonal screen size for the 19CP4 picture tube?

A. 12 in.B. 16 in.C. 19 in.D. 24 in.

• What is the diagonal screen size for the 19CP4 picture tube?

A. 12 in.B. 16 in.C. 19 in.D. 24 in.

• To what deflection angle does a maximum deflection angle of 45 degrees either side of center correspond?

A. 30 degreesB. 90 degreesC. 120 degreesD. 360 degrees

• To what deflection angle does a maximum deflection angle of 45 degrees either side of center correspond?

A. 30 degreesB. 90 degreesC. 120 degreesD. 360 degrees

• What is the usual heater voltage for picture tubes?

A. 1.6 VB. 5.6 VC. 6.3 VD. 9.3 V

• What is the usual heater voltage for picture tubes?

A. 1.6 VB. 5.6 VC. 6.3 VD. 9.3 V

• What is the typical anode voltage for a 25-in color picture tube?

A. 10 kVB. 30 kVC. 1 kVD. 30 V

• What is the typical anode voltage for a 25-in color picture tube?

A. 10 kVB. 30 kVC. 1 kVD. 30 V

• Typically, the anode capacitance for a 25-in. tube is ______ pF.

A. 2B. 20C. 205D. 2000

• Typically, the anode capacitance for a 25-in. tube is ______ pF.

A. 2B. 20C. 205D. 2000

• When the TV set was turned on, full power was applied to the heater and the picture appeared within a fraction of a second.

A. UltorB. ImplosionC. Instant-on operationD. Screen persistence

• When the TV set was turned on, full power was applied to the heater and the picture appeared within a fraction of a second.

A. UltorB. ImplosionC. Instant-on operationD. Screen persistence

• What are the phosphor numbers, respectively, for monochrome and color picture tubes?

A. P1 and P4B. P1 and P22C. P4 and P22 D. P4 and P1

• What are the phosphor numbers, respectively, for monochrome and color picture tubes?

A. P1 and P4B. P1 and P22C. P4 and P22 D. P4 and P1

• What is the color of P1 screen phosphor?

A. RedB. BlueC. WhiteD. Green

• What is the color of P1 screen phosphor?

A. RedB. BlueC. WhiteD. Green

• Which of the following is the most negative (or least positive) electrode in the electron gun?

A. CathodeB. Control Grid G1C. Screen GridD. Focus Grid

• Which of the following is the most negative (or least positive) electrode in the electron gun?

A. CathodeB. Control Grid G1C. Screen GridD. Focus Grid

• Which is the most positive element in the electron gun?

A. UltorB. AnodeC. Cathode D. Ultor or Anode

• Which is the most positive element in the electron gun?

• Most of the electrons in the beam flow out of which terminal?

• The crossover point for focusing is formed by the ____ electron lens.

A. firstB. secondC. thirdD. fourth

• The crossover point for focusing is formed by the ____ electron lens.

A. firstB. secondC. thirdD. fourth

• In which method is a G3 voltage of 200 V used for?

A. low-voltage focusB. high-voltage focusC. either low- or high voltage focusD. none of these

• In which method is a G3 voltage of 200 V used for?

A. low-voltage focusB. high-voltage focusC. either low- or high voltage focusD. none of these

• Small magnets embedded in the yoke housing are correct for ____.

A. yoke positionB. magnetic deflectionC. pincushion distortion D. centering adjustments

• Small magnets embedded in the yoke housing are correct for ____.

A. yoke positionB. magnetic deflectionC. pincushion distortion D. centering adjustments

• The coils above and below the electron beam of the picture tube are for _______.

A.V scanningB. H scanningC. Either V or H scanning D. None of these

• The coils above and below the electron beam of the picture tube are for _______.

A.V scanningB. H scanningC. Either V or H scanning D. None of these

• Neck shadow result when the deflection yoke is ___________.

A. too near backB. too near forward C. too far back D. too far forward

• Neck shadow result when the deflection yoke is ___________.

A. too near backB. too near forward C. too far back D. too far forward

• In color picture tube, degaussing should be done _____ the color purity adjustments.

A. afterB. beforeC. either wayD. none at all

• In color picture tube, degaussing should be done _____ the color purity adjustments.

A. afterB. beforeC. either wayD. none at all

• In color picture tube, degaussing is done with ______.

A. direct currentB. alternating currentC. 60-Hz alternating current D. 90-Hz alternating current

• In color picture tube, degaussing is done with ______.

A. direct currentB. alternating currentC. 60-Hz alternating current D. 90-Hz alternating current

• When the receiver is first turned on, what current does the ADG circuit have?

A. HighB. LowC. Both high and low D. Neither high now low

• When the receiver is first turned on, what current does the ADG circuit have?

A. HighB. LowC. Both high and low D. Neither high now low

• In color picture tube, what does a solid red raster checked for?

A. Good color purityB. ConvergenceC. Degaussing D. Resetting the yoke

• In color picture tube, what does a solid red raster checked for?

A. Good color purityB. ConvergenceC. Degaussing D. Resetting the yoke

• Where do the small, white dots in the picture used for?

A. Good color purityB. ConvergenceC. DegaussingD. Resetting the yoke

• Where do the small, white dots in the picture used for?

A. Good color purityB. ConvergenceC. DegaussingD. Resetting the yoke

• What does the color fringing on the edges of the picture shows?

A. MisconvergenceB. Insufficient signal driveC. Turned off gunsD. Red cloud

• What does the color fringing on the edges of the picture shows?

A. MisconvergenceB. Insufficient signal driveC. Turned off gunsD. Red cloud

• Static convergence is done for the _____ of the screen.

A. centerB. edgesC. leftD. right

• Static convergence is done for the _____ of the screen.

A. centerB. edgesC. leftD. right

• Where are the permanent magnets used?

A. static convergenceB. dynamic convergenceC. automatic degaussing D. resetting the yoke

• Where are the permanent magnets used?

A. static convergenceB. dynamic convergenceC. automatic degaussing D. resetting the yoke

• In picture tubes, the basic waveform for dynamic convergence is the ____.

A. parabolaB. half a sine wave C. full sine wave D. parabola or half of sine wave

• In picture tubes, the basic waveform for dynamic convergence is the ____.

A. parabolaB. half a sine wave C. full sine wave D. parabola or half of sine wave

• Pincushion magnets are used for ____ picture tubes.

A. monochromeB. colorC. both color and monochromeD. either color or monochrome

• Pincushion magnets are used for ____ picture tubes.

A. monochromeB. colorC. both color and monochromeD. either color or monochrome

• The abbreviation TB is for ___ pincushion correction.

A. diagonalB. verticalC. horizontalD. either way

• The abbreviation TB is for ___ pincushion correction.

A. diagonalB. verticalC. horizontalD. either way

• The typical dc grid bias for a 19-in picture tube

A. -4 VB. -40 VC. -6 VD. -60 V

• The typical dc grid bias for a 19-in picture tube

A. -4 VB. -40 VC. -6 VD. -60 V

• Typical ac signal drive for a 19-in picture tube

A. 8 VppB. 40 VppC. 120 VppD. 140 Vpp

• Typical ac signal drive for a 19-in picture tube

A. 8 VppB. 40 VppC. 120 VppD. 140 Vpp

• For the picture tube, the brightness control varies the ___ bias signal drive

A. dcB. acC. either ac or dcD. both ac and dc

• For the picture tube, the brightness control varies the ___ bias signal drive

A. dcB. acC. either ac or dcD. both ac and dc

• The R, G, and B screen-grid adjustments are set for ___ in the picture

A. visual cutoffB. white highlightsC. brightness control D. gray-scale tracking

• The R, G, and B screen-grid adjustments are set for ___ in the picture

A. visual cutoffB. white highlightsC. brightness control D. gray-scale tracking

• The R, G, and B video drive controls are set for ___ in the picture

A. dark grayB. whiteC. blackD. green

• The R, G, and B video drive controls are set for ___ in the picture

A. dark grayB. whiteC. blackD. green

• Background controls of many picture tubes are for the

A. AC biasB. DC biasC. AC video signalD. DC video signal

• Background controls of many picture tubes are for the

A. AC biasB. DC biasC. AC video signalD. DC video signal

• The G2 master screen control of picture tubes varies the ____.

A. ac voltageB. dc voltageC. ac video signalD. dc video signal

• The G2 master screen control of picture tubes varies the ____.

A. ac voltageB. dc voltageC. ac video signalD. dc video signal

• In the sawtooth waveform for linear scanning

A. the linear rises if for flybackB. the complete cycle includes trace and retraceC. the sharp reversal in amplitude produces traceD. the beam moves faster during trace than

retrace

• In the sawtooth waveform for linear scanning

A. the linear rises if for flybackB. the complete cycle includes trace and retraceC. the sharp reversal in amplitude produces traceD. the beam moves faster during trace than

retrace

• Given a 635-us vertical retrace time, the number of complete horizontal lines scanned during vertical flyback is

A. 10B. 20C. 30D. 63

• Given a 635-us vertical retrace time, the number of complete horizontal lines scanned during vertical flyback is

A. 10B. 20C. 30D. 63

• One-half line spacing between the start positions for scanning even and odd fields produces

A. linear scanningB. line pairingC. fishtailingD. exact interlacing

• One-half line spacing between the start positions for scanning even and odd fields produces

A. linear scanningB. line pairingC. fishtailingD. exact interlacing

• The number of lines scanned per frame in the raster on the picture tube screen is

A. 525B. 262 ½ C. 20D. 10

• The number of lines scanned per frame in the raster on the picture tube screen is

A. 525B. 262 ½ C. 20D. 10

• • In the frame for which interlaced scanning is

used, alternate lines are skipped during vertical scanning because

A. the trace is slower than the retraceB. the vertical scanning frequency is doubled from

30 to 60 HzC. the horizontal scanning is slower than vertical

scanningD. the frame has 4:3 aspect ratio

• • In the frame for which interlaced scanning is

used, alternate lines are skipped during vertical scanning because

A. the trace is slower than the retraceB. the vertical scanning frequency is doubled from

30 to 60 HzC. the horizontal scanning is slower than vertical

scanningD. the frame has 4:3 aspect ratio

• If the horizontal flyback is 10 percent, this time equals

A. 10 usB. 56 usC. 6.4 usD. 83 us

• If the horizontal flyback is 10 percent, this time equals

A. 10 usB. 56 usC. 6.4 usD. 83 us

• 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 square raster

• 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 square raster

• The width of a vertical sync pulse with its serrations includes the time of

A. six half-lines, or three linesB. five linesC. three half-lines D. five half-lines

• The width of a vertical sync pulse with its serrations includes the time of

A. six half-lines, or three linesB. five linesC. three half-lines D. five half-lines

• Sawtooth generator circuits produce the scanning raster, but the sync pulses are needed for

A. linearityB. timingC. keystoningD. line pairing

• Sawtooth generator circuits produce the scanning raster, but the sync pulses are needed for

A. linearityB. timingC. keystoningD. line pairing

• Which of the following frequencies is wrong?

A. 15,750 Hz for horizontal sync and scanningB. 60 Hz for vertical sync and scanningC. 31,500 Hz for equalizing pulses and

serrations in the vertical sync pulsesD. 31,500 Hz for the vertical scanning frequency

• Which of the following frequencies is wrong?

A. 15,750 Hz for horizontal sync and scanningB. 60 Hz for vertical sync and scanningC. 31,500 Hz for equalizing pulses and

serrations in the vertical sync pulsesD. 31,500 Hz for the vertical scanning frequency

• Which of the following is faster in horizontal scanning?

A. traceB. retraceC. flybackD. retrace or flyback

• Which of the following is faster in horizontal scanning?

A. traceB. retraceC. flybackD. retrace or flyback

• Which of the following takes more time?

A. H retraceB. H traceC. V retraceD. V trace

• Which of the following takes more time?

A. H retraceB. H traceC. V retraceD. V trace

• What does an interlaced scanning require for the number of the horizontal lines?

A. OddB. EvenC. Both odd and even simultaneously D. Either odd or even

• What does an interlaced scanning require for the number of the horizontal lines?

A. OddB. EvenC. Both odd and even simultaneously D. Either odd or even

• How many horizontal lines are in the odd or an even field?

A. 10 ½ B. 262 ½ C. 525 linesD. 600 lines

• How many horizontal lines are in the odd or an even field?

A. 10 ½ B. 262 ½ C. 525 linesD. 600 lines

• How many H lines are there in a complete frame?

A. 19 linesB. 21 linesC. 525 linesD. 600 lines

• How many H lines are there in a complete frame?

A. 19 linesB. 21 linesC. 525 linesD. 600 lines

• How many H lines are there in each field?

A. 8 ½ linesB. 10 ½ linesC. 262 ½ linesD. 325 lines

• How many H lines are there in each field?

A. 8 ½ linesB. 10 ½ linesC. 262 ½ linesD. 325 lines

• How many H lines are there in each V retrace?

A. OneB. TwoC. ThreeD. Four

• How many H lines are there in each V retrace?

A. OneB. TwoC. ThreeD. Four

• What are the frequencies of V scanning, V sync, and V blanking?

A.30 HzB. 60 HzC. 90 HzD. 360 Hz

• What are the frequencies of V scanning, V sync, and V blanking?

A.30 HzB. 60 HzC. 90 HzD. 360 Hz

• What are the frequencies of H scanning, H sync, and H blanking?

A. 15,750 HzB. 16,750 HzC. 31,500 HzD. 30,050 Hz

• What are the frequencies of H scanning, H sync, and H blanking?

A. 15,750 HzB. 16,750 HzC. 31,500 HzD. 30,050 Hz

• In video signal analysis, what are the three parts of the composite video signal, for two horizontal lines in the picture?

A. Camera signalB. H syncC. H blanking D. All of these

• In video signal analysis, what are the three parts of the composite video signal, for two horizontal lines in the picture?

A. Camera signalB. H syncC. H blanking D. All of these

• 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 respectivelyB. 92.5, 40, 7.5 respectively C. 7.5, 40, 92.5 respectivelyD. 92.5, 7.5, 40 respectively

• 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 respectivelyB. 92.5, 40, 7.5 respectively C. 7.5, 40, 92.5 respectivelyD. 92.5, 7.5, 40 respectively

• What are the approximate time periods for the width of H blanking pulse in microseconds?

A. 5B. 8.93C. 10.2D. 53.5

• What are the approximate time periods for the width of H blanking pulse in microseconds?

A. 5B. 8.93C. 10.2D. 53.5

• What are the approximate time periods for the visible H trace?

A. 5B. 8.93C. 10.2D. 53.5

• What are the approximate time periods for the visible H trace?

A. 5B. 8.93C. 10.2D. 53.5

• What are the approximate time periods for the width of H sync pulse?

A. 5B. 8.93C. 10.2D. 53.5

• What are the approximate time periods for the width of H sync pulse?

A. 5B. 8.93C. 10.2D. 53.5

• Which pulses in V blanking correspond to the 3H lines wide?

A. V syncB. V blankingC. EqualizingD. All of these

• Which pulses in V blanking correspond to the 31,500 Hz?

• Give the maximum number of picture details for each horizontal line.

A. 338B. 426C. 125,000D. 144,000

• Give the maximum number of picture details for each horizontal line.

A. 338B. 426C. 125,000D. 144,000

• Give the maximum number of picture details for total picture area.

A. 338B. 426C. 125,000D. 144,000

• Give the maximum number of picture details for total picture area.

A. 338B. 426C. 125,000D. 144,000

• The average dc level is close to the blanking level for a ____ scene?

A. lightB. dark C. either dark or light D. neither dark nor light

• The average dc level is close to the blanking level for a ____ scene?

A. lightB. dark C. either dark or light D. neither dark nor light

• In what condition does the picture tube reproduce black?

A. Maximum beam currentB. Minimum beam currentC. Zero beam current D. None of these

• In what condition does the picture tube reproduce black?

A. Maximum beam currentB. Minimum beam currentC. Zero beam current D. None of these

• The gamma affects the ____ of the picture tube.

A. contrastB. brightnessC. dullness D. either the brightness or contrast

• The gamma affects the ____ of the picture tube.

A. contrastB. brightnessC. dullness D. either the brightness or contrast

• Picture tube has gamma which is _____.

A. greater than 1B. less than 1C. infinityD. zero

• Picture tube has gamma which is _____.

A. greater than 1B. less than 1C. infinityD. zero

• Brightness variations of the picture information are in which signal?

A. IB. QC. YD. R – Y

• Brightness variations of the picture information are in which signal?

A. IB. QC. YD. R – Y

• The hue 180 degrees out of phase with red is

A. cyanB. yellowC. greenD. blue

• The hue 180 degrees out of phase with red is

A. cyanB. yellowC. greenD. blue

• Greater p-p amplitude of the 3.58 – MHz chrominance signal indicates more

A. whiteB. yellowC. hueD. saturation

• Greater p-p amplitude of the 3.58 – MHz chrominance signal indicates more

A. whiteB. yellowC. hueD. saturation

• The interfering beat frequency of 920 kHz is between the 3.58 – MHz color subcarrier and the

A. 4.5 – MHz intercarrier soundB. picture carrierC. lower adjacent sound D. upper adjacent picture

• The interfering beat frequency of 920 kHz is between the 3.58 – MHz color subcarrier and the

A. 4.5 – MHz intercarrier soundB. picture carrierC. lower adjacent sound D. upper adjacent picture

• The hue of color sync phase is

A. redB. cyanC. blueD. yellow-green

• The hue of color sync phase is

A. redB. cyanC. blueD. yellow-green

• Which signal has color information for 1.3 – MHz bandwidth?

A. IB. YC. R – YD. B – Y

• Which signal has color information for 1.3 – MHz bandwidth?

A. IB. YC. R – YD. B – Y

• Which of the following is false?

A.The I video hues are orange or cyanB. The transmitter matrix output includes Y, I,

and Q video.C. A three-gun picture tube can serve as a

matrixD. A fully saturated color is mostly white

• Which of the following is false?

A.The I video hues are orange or cyanB. The transmitter matrix output includes Y, I,

and Q video.C. A three-gun picture tube can serve as a

matrixD. A fully saturated color is mostly white

• The color with the most luminance is

A. redB. yellowC. greenD. blue

• The color with the most luminance is

A. redB. yellowC. greenD. blue

• What is the hue of a color 90 degrees leading sync burst phase?

A. yellowB. cyanC. blueD. orange

• What is the hue of a color 90 degrees leading sync burst phase?

A. yellowB. cyanC. blueD. orange

• The average voltage value of the 3.58 – MHz modulated chrominance signal is

A. zero for most colorsB. close to black for yellowC. the brightness of the color D. the saturation of the color

• The average voltage value of the 3.58 – MHz modulated chrominance signal is

A. zero for most colorsB. close to black for yellowC. the brightness of the color D. the saturation of the color

• The second IF value for color in receivers, for any station, is

A. 0.5 MHzB. 1.3 MHzC. 3.58 MHzD. 4.5 MHz

• The second IF value for color in receivers, for any station, is

• If the 3.58 – MHz C amplifier in the receiver does not operate, the result will be

A. no colorB. no redC. too much blueD. too much yellow

• If the 3.58 – MHz C amplifier in the receiver does not operate, the result will be

A. no colorB. no redC. too much blueD. too much yellow

• How many octaves is the frequency range 1 to 8 MHz?

A. 1B. 2C. 3D. 8

• How many octaves is the frequency range 1 to 8 MHz?

A. 1B. 2C. 3D. 8

• Which system can be used for both recording and playback?

A. CEDB. VHDC. Laser diskD. VHS

• Which system can be used for both recording and playback?

A. CEDB. VHDC. Laser diskD. VHS

• How many TV fields are recorded on one slant track of tape?

A.1B. 2C. 4D. 60

• How many TV fields are recorded on one slant track of tape?

A.1B. 2C. 4D. 60

• The video heads rotate at high frequency to increase the

A.tape speedB. writing speedC. reel rotation D. tape tension

• The video heads rotate at high frequency to increase the

A.tape speedB. writing speedC. reel rotation D. tape tension

• A typical frequency for the FM luminance signal in VCR recording is

A. 0.1 MHzB. 3.5 MHzC. 10 MHzD. 680 kHz

• A typical frequency for the FM luminance signal in VCR recording is

A. 0.1 MHzB. 3.5 MHzC. 10 MHzD. 680 kHz

• Which if the following applies to the color-under technique?

A. Chroma amplitudes are decreasedB. Chroma frequencies are reducedC. Luminance frequencies are decreasedD. Chroma and luminance frequencies are reduced

• Which if the following applies to the color-under technique?

A. Chroma amplitudes are decreasedB. Chroma frequencies are reducedC. Luminance frequencies are decreasedD. Chroma and luminance frequencies are reduced

• What oscillator frequency is needed to heterodyne 629 kHz up to 3.58 MHz?

A.3 MHzB. 4.21 MHzC. 6.3 MHzD. 10 MHz

• What oscillator frequency is needed to heterodyne 629 kHz up to 3.58 MHz?

A.3 MHzB. 4.21 MHzC. 6.3 MHzD. 10 MHz

• A comb filter is used to

A. cancel chroma crosstalkB. separate white from black C. clip the sync from blanking D. separate alternating from direct current

• A comb filter is used to

A. cancel chroma crosstalkB. separate white from black C. clip the sync from blanking D. separate alternating from direct current

• Switching for each field is required for the

A. audio headB. control-track headC. video headsD. erase head

• Switching for each field is required for the

A. audio headB. control-track headC. video headsD. erase head

• Servocontrol of speed and phase is used for the

A. control headB. erase headC. audio headD. video head scanner

• Servocontrol of speed and phase is used for the

A. control headB. erase headC. audio headD. video head scanner

• The part that rotates to meter out the tape at constant speed is the

A. control headB. erase headC. entrance guide D. capstan

• The part that rotates to meter out the tape at constant speed is the

A. control headB. erase headC. entrance guide D. capstan

• To make the tape speed the same in playback as in recording, the tape speed is regulated by the

A. audio trackB. control-track pulsesC. video slant tracks D. erase head

• To make the tape speed the same in playback as in recording, the tape speed is regulated by the

A. audio trackB. control-track pulsesC. video slant tracks D. erase head

• Tilting the video head gaps is necessary with the

A. color-underB. zero guard bandsC. FM luminance signalD. long-play tubes

• Tilting the video head gaps is necessary with the

A. color-underB. zero guard bandsC. FM luminance signalD. long-play tubes

• Which system uses a laser light beam for

playback?

A. CEDB. VHDC. BetamaxD. VLP

• Which system uses a laser light beam for

playback?

A. CEDB. VHDC. BetamaxD. VLP

• In the CED system, the disk capacitance varies with the

A. pit depthB. disk sizeC. speed of rotationD. wavelength of the scanning light

• In the CED system, the disk capacitance varies with the

A. pit depthB. disk sizeC. speed of rotationD. wavelength of the scanning light

• The modulated picture carrier wave includes the composite video signal as the

A. average carrier levelB. symmetric envelope of amplitude variationsC. lower sideband without the upper sidebandD. upper envelope without the lower envelope

• The modulated picture carrier wave includes the composite video signal as the

A. average carrier levelB. symmetric envelope of amplitude variationsC. lower sideband without the upper sidebandD. upper envelope without the lower envelope

• Which of the following statements is true?

A. Negative transmission means that the carrier amplitude decreases for black

B. Negative transmission means that the carrier amplitude decreases for white

C. Vestigial sideband transmission means that both upper and lower sidebands are transmitted for all modulating frequencies

D. Vestigial sideband transmission means that the modulated picture carrier signal has only the upper envelope

• Which of the following statements is true?

A. Negative transmission means that the carrier amplitude decreases for black

B. Negative transmission means that the carrier amplitude decreases for white

C. Vestigial sideband transmission means that both upper and lower sidebands are transmitted for all modulating frequencies

D. Vestigial sideband transmission means that the modulated picture carrier signal has only the upper envelope

• With a 2 – MHz video signal modulating the picture carrier signal for Channel 4 (66 to 72 MHz), which of the following frequencies are transmitted?

A. 66 – MHz carrier frequency and 68 – MHz upper side frequency

B. 71.75 – MHz carrier frequency with 69 – and 73 – MHz side frequencies

C. 67.25 – MHz carrier frequency with 65.25 – and 69.25 – MHz side frequencies

D. 67.25 – MHz carrier and 69.25 – MHz upper side frequency

• With a 2 – MHz video signal modulating the picture carrier signal for Channel 4 (66 to 72 MHz), which of the following frequencies are transmitted?

A. 66 – MHz carrier frequency and 68 – MHz upper side frequency

B. 71.75 – MHz carrier frequency with 69 – and 73 – MHz side frequencies

C. 67.25 – MHz carrier frequency with 65.25 – and 69.25 – MHz side frequencies

D. 67.25 – MHz carrier and 69.25 – MHz upper side frequency

• With a 0.5 – MHz video signal modulating the picture carrier,

A. both upper and lower side frequencies are transmitted

B. only the upper side frequency is transmittedC. only the lower side frequency is transmittedD. no side frequencies are transmitted

• With a 0.5 – MHz video signal modulating the picture carrier,

A. both upper and lower side frequencies are transmitted

B. only the upper side frequency is transmittedC. only the lower side frequency is transmittedD. no side frequencies are transmitted

• In all standard television broadcast channels, the difference between the picture and sound carrier frequencies is

A. 0.25 MHzB. 1.25 MHzC. 4.5 MHzD. 6 MHz

• In all standard television broadcast channels, the difference between the picture and sound carrier frequencies is

• The difference between the sound carrier frequencies in two adjacent channels is

• Line-of-sight transmission is a characteristic of propagation for the

A. VHF band and higher frequenciesB. VHF band but not the UHF bandC. radio frequencies below 1 MHzD. AM picture signal but not the FM sound signal

• Line-of-sight transmission is a characteristic of propagation for the

A. VHF band and higher frequenciesB. VHF band but not the UHF bandC. radio frequencies below 1 MHzD. AM picture signal but not the FM sound signal

• In channel 14 (470 to 476 MHz), the 3.58 – MHz color signal is transmitted at

A. 471.25 MHzB. 473.25 MHzC. 474.83 MHz D. 475.25 MHz

• In channel 14 (470 to 476 MHz), the 3.58 – MHz color signal is transmitted at

A. 471.25 MHzB. 473.25 MHzC. 474.83 MHz D. 475.25 MHz

• The difference between the sound carrier and color subcarrier frequencies is

• The maximum deviation of the FM sound signal, in kilohertz, is

A.10B. 25C. 75D. 100

• The maximum deviation of the FM sound signal, in kilohertz, is

A.10B. 25C. 75D. 100

• Which of the following applies for a

monochrome picture?

A.Chroma amplifier onB. Chroma amplifier offC. Picture tube off D. Delay line open

• Which of the following applies for a

monochrome picture?

A.Chroma amplifier onB. Chroma amplifier offC. Picture tube off D. Delay line open

• Which of the following is NOT tuned to 3.8 MHz?

A. burst amplifierB. video preamplifierC. Chroma amplifierD. Color demodulator input

• Which of the following is NOT tuned to 3.8 MHz?

A. burst amplifierB. video preamplifierC. Chroma amplifierD. Color demodulator input

• The contrast control is in the

A. chroma amplifierB. color killerC. Y video amplifier D. delay line

• The contrast control is in the

A. chroma amplifierB. color killerC. Y video amplifier D. delay line

• The color level control is in the

A. demodulatorB. BPAC. AFPCD. G – Y amplifier

• The color level control is in the

A. demodulatorB. BPAC. AFPCD. G – Y amplifier

• The color oscillator does not operate. The trouble is

A. incorrect huesB. excessive confettiC. no color D. no Picture

• The color oscillator does not operate. The trouble is

A. incorrect huesB. excessive confettiC. no color D. no Picture

• The balance for Y video signals to the three

guns in the picture tube is set by the

A. screen controlsB. tint controlC. contrast controlD. drive controls

• The balance for Y video signals to the three

guns in the picture tube is set by the

A. screen controlsB. tint controlC. contrast controlD. drive controls

• Which signal needs a 0.8 – us time delay?

A. 3.58 – MHz chromaB. B – Y video C. Y video D. Color Bursa

• Which signal needs a 0.8 – us time delay?

A. 3.58 – MHz chromaB. B – Y video C. Y video D. Color Bursa

• The output of the Burst separator feeds the

A. color demodulatorsB. G – Y adderC. AFPC for color oscillatorD. Y video amplifier

• The output of the Burst separator feeds the

A. color demodulatorsB. G – Y adderC. AFPC for color oscillatorD. Y video amplifier

• The output of the color oscillator feeds the

A. chroma BPAB. color demodulatorsC. picture tubeD. burst separator

• The output of the color oscillator feeds the

A. chroma BPAB. color demodulatorsC. picture tubeD. burst separator

• Drifting color bars in the picture indicate trouble in the

A. Y video amplifierB. chroma BPAC. color killerD. AFPC for color oscillator

• Drifting color bars in the picture indicate trouble in the

A. Y video amplifierB. chroma BPAC. color killerD. AFPC for color oscillator

• The beat frequency between the 3.58 – MHz color subcarrier and the 4.5 – MHz sound signal is

• Which control varies the phase angle of the demodulated color video signal?

A. Color levelB. TintC. DriveD. Picture

• Which control varies the phase angle of the demodulated color video signal?

A. Color levelB. TintC. DriveD. Picture

• Which of the following stages must be on during horizontal flyback time?

A. Y video amplifierB. Chroma BPAC. Burst separator D. Color oscillator

• Which of the following stages must be on during horizontal flyback time?

A. Y video amplifierB. Chroma BPAC. Burst separator D. Color oscillator

• Which of the following stages has bias from the ACC and color-killer circuits?

A. R – Y demodulatorB. R – Y video amplifierC. Chroma BPA D. Color oscillator

• Which of the following stages has bias from the ACC and color-killer circuits?

A. R – Y demodulatorB. R – Y video amplifierC. Chroma BPA D. Color oscillator

• A crystal-ringer circuit is used for the

A. Y video amplifierB. AFPC on color oscillatorC. color demodulators D. chroma BPA

• A crystal-ringer circuit is used for the

A. Y video amplifierB. AFPC on color oscillatorC. color demodulators D. chroma BPA

• Which of the following is a midband cable TV channel?

A. 6B. 7C. A or 14D. J or 23

• Which of the following is a midband cable TV channel?

A. 6B. 7C. A or 14D. J or 23

• Coaxial cable for distribution systems has an impedance of

A.50 ohmsB. 75 ohmsC. 150 ohmsD. 300 ohms

• Coaxial cable for distribution systems has an impedance of

A.50 ohmsB. 75 ohmsC. 150 ohmsD. 300 ohms

• The cable converter output for the TV receiver is usually on channel

A. 3B. 6C. 7D. 9

• The cable converter output for the TV receiver is usually on channel

A. 3B. 6C. 7D. 9

• The VSWR for a line terminated in its Z0 is

A. 0B. 1C. 1.5D. 2

• The VSWR for a line terminated in its Z0 is

A. 0B. 1C. 1.5D. 2

• How many dBmV units correspond to a 1 – mV signal level?

A.0B. 1C. 3D. 6

• How many dBmV units correspond to a 1 – mV signal level?

A.0B. 1C. 3D. 6

• A tap for the subscriber drop line has a

A. high insertion lossB. high tap lossC. low tap loss D. 300 – ohm impedance

• A tap for the subscriber drop line has a

A. high insertion lossB. high tap lossC. low tap loss D. 300 – ohm impedance

• The most popular plug for RG – 59U coaxial cable is the

A. RCA phonograph plugB. 4 – pin DIN connectorC. F connectorD. banana pin

• The most popular plug for RG – 59U coaxial cable is the

A. RCA phonograph plugB. 4 – pin DIN connectorC. F connectorD. banana pin

A. Excessive signal causes snow in the pictureB. A weak signal causes cross-modulation

distortionC. A weak signal causes snow in the pictureD. A scrambled signal has excessive sync

amplitide

A. Excessive signal causes snow in the pictureB. A weak signal causes cross-modulation

distortionC. A weak signal causes snow in the pictureD. A scrambled signal has excessive sync

amplitide

• The upstream signal in two-way cable systems has the frequency of

A.5 to 30 MHzB. 3 to 300 MHzC. 500 MHzD. 13 GHz

• The upstream signal in two-way cable systems has the frequency of

A.5 to 30 MHzB.3 to 300 MHzC.500 MHzD.13 GHz

• A typical value for the IF signal, in megahertz, for up-down cable converters is

A. 45.75B. 300.75C. 500.75D. 612.75

• A typical value for the IF signal, in megahertz, for up-down cable converters is

A. 45.75B. 300.75C. 500.75D. 612.75

• Frequency synthesis is used for

A. VCO in the up converterB. the trunk amplifierC. fiber-optic cableD. microwave links

• Frequency synthesis is used for

A. VCO in the up converterB. the trunk amplifierC. fiber-optic cableD. microwave links

• For in-band descramblers, the decoding pulses are sent on the

A. color subcarrierB. sound carrierC. picture carrierD. H sync pulses

• For in-band descramblers, the decoding pulses are sent on the

A. color subcarrierB. sound carrierC. picture carrierD. H sync pulses

A. Microwave links can use FMB. Fiber-optic cables very high lossesC. Super trunk lines use large cable for low

lossesD. The value 13 GHz is in the microwave band

A. Microwave links can use FMB. Fiber-optic cables very high lossesC. Super trunk lines use large cable for low

lossesD. The value 13 GHz is in the microwave band

• A trunk cable run a loss of -20 dBmV. To make

up for this loss, the voltage gain of the next amplifier should be at least

A. 10B. 100C. 200D. 300

• A trunk cable run a loss of -20 dBmV. To make

up for this loss, the voltage gain of the next amplifier should be at least

A. 10B. 100C. 200D. 300

GROB TV_ppt.ppt

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