Online Questions and Answers Topic Outline
- MCQs in Radio Transmitter
- MCQs in AM and FM
- MCQs in Television
- MCQs in Studio (Microphone, Amplifiers, Cameras, Lighting, etc.)
- MCQs in Cable Television
MCQs in Broadcasting and Cable TV System Series
Following is the list of multiple choice questions in this brand new series:
Continue Practice Exam Test Questions Part IX of the Series
401. The number of lines per second in the TV system is
- A. 31,500
- B. 15,700
- C. 262 ½
- D. 525
402. In a basic transmitter, ________is a kind of transmitter that develops type B emission.
- A. Arc
- B. Spark
- C. Alexanderson
- D. High end
403. It is a number that indicates how contrast is expanded or compressed.
- A. Alpha
- B. Beta
- C. Gamma
- D. Sigma
404. Color picture tubes have ______ guns for its phosphors.
- A. 1
- B. 2
- C. 3
- D. 4
405. The FM broadcast band is divided into _____ channels are suggested by KBP.
- A. 200
- B. 100
- C. 50
- D. 25
406. The output of the vertical amplifier, applied to the yoke in a TV receiver, consists of
- A. Direct current
- B. Amplified vertical sync pulse
- C. A sawtooth voltage
- D. A sawtooth current
407. The frequency spectrum of the stereophonic FM signal.
- A. 67 kHz
- B. 59.5 kHz to 74.5 kHz
- C. 19 kHz to 38 kHz
- D. 30 kHz to 53 kHz
408. What is the video frequency response corresponding to the horizontal resolution of 200 lines?
- A. 4 MHz
- B. 1.5 MHz
- C. 4.5 MHz
- D. 2.5 MHz
409. The gamma of the picture tube is
- A. 0.4545
- B. 1.0
- C. 1.4
- D. 2.2
410. It is the instantaneous departure of the frequency of the emitted wave from the center frequency resulting from modulation.
- A. Deviation
- B. Frequency swing
- C. Phase shift
- D. Deviation ratio
411. If a TV sound transmitter has a carrier frequency of 197.75 MHz, the picture carrier is
- A. 191.75 MHz
- B. 193.25 MHz
- C. 202.25 MHz
- D. 203.75 MHz
412. The number of lines per field in the Philippine TV system is
- A. 262 ½
- B. 525
- C. 30
- D. 60
413. What is the best site of an AM broadcast transmitter?
- A. Marshy land
- B. Dry land
- C. Highly elevated
- D. Average terrain
414. What is the hue of a color 90 degrees leading sync burst phase?
- A. Yellow
- B. Cyan
- C. Blue
- D. Orange
415. The two black conductive coatings of picture tubes are made up of
- A. Phosphor
- B. Aquadag
- C. Cavity
- D. Nickel
416. The maximum power allocation of AM transmitter in Metro Manila in kW is
- A. 10 kW
- B. 20 kW
- C. 40 kW
- D. 30 kW
417. The function of the serrations in the composite video waveforms is to
- A. Equalize the change in the integrator before the start of vertical retrace
- B. Help vertical synchronization
- C. Help horizontal synchronization
- D. Simplify the generation of the vertical sync pulse
418. Which system uses a light beam for playback?
- A. CED
- B. VHD
- C. Betamax
- D. VLP
419. Weak emission from one cathode in a tricolor picture tube causes
- A. A weak picture
- B. A long warmup time
- C. A color imbalance in the raster and picture
- D. All of these
420. In AM broadcast, the current carrier shift at any percentage of modulation shall not exceed
- A. 5%
- B. 15%
- C. 20%
- D. 2.5%
421. Indicate which voltages are not found in the output of a normal monochrome receiver video detector.
- A. Sync
- B. Video
- C. Sweep
- D. Sound
422. The sawtooth waveform for deflection provides _______.
- A. Horizontal deflection
- B. Distortions
- C. Linear scanning
- D. Flicker
423. In AM broadcast, the transmitter must be capable of maintaining the operating frequency within the limits of ______.
- A. +/- 10 Hz
- B. +/- 20 Hz
- C. +/- 25 Hz
- D. +/- 75 Hz
424. How much illumination in lux a 400-candlepower make that is 3 meters from the surface?
- A. 133.3
- B. 1200
- C. 200
- D. 44.4
425. Brightness variations of the picture information are in which signal?
- A. I
- B. Q
- C. Y
- D. R-Y
426. How many octaves is the frequency range of 1 to 8 MHz?
- A. 1
- B. 2
- C. 3
- D. 8
427. For television, the maximum deviation of the FM sound signal in kHz.
- A. 10
- B. 25
- C. 75
- D. 100
428. Indicate which of the following signals is not transmitted in color TV
- A. Y
- B. Q
- C. R
- D. I
429. Emission outside of the assigned channel, as a result of the modulation process.
- A. Overmodulation
- B. Spurious emission
- C. Out-of-band emission
- D. In band emission
430. Determine which of the following is not part of RF section of a radio transmitter.
- A. Master oscillator
- B. Buffer amplifier
- C. AF voltage amplifier
- D. Frequency amplifier
431. The power of any conducted spurious emission shall be attenuated below the maximum level of carrier frequency in accordance with the following formula:
- A. Attenuation (dB) = 43 + 20 log P
- B. Attenuation (dB) = 43 + log P
- C. Attenuation (dB) = 43 + 10 log P
- D. Attenuation (dB) = 43 + log P/10
432. In television, gamma affects _____
- A. Color
- B. Contrast
- C. Brightness
- D. Hue
433. In the IRE scale for the composite video signal, what is the number of IRE units for sync?
- A. 7.5
- B. 92.5
- C. 40
- D. 10
434. As prescribed by the technical standards for Cable Television operation and in order to be compatible for any value added services in the future, Trunk cable should have a minimum diameter of _______.
- A. 0.25 inch
- B. 0.5 inch
- C. 0.75 inch
- D. 1.0 inch
435. Compared with 100 percent saturation, the desaturated color have
- A. More luminance for the Y signal
- B. Less luminance for the Y signal
- C. More chrominance for the C signal
- D. Less hue for the C signal
436. What is the practical baseband frequency for the color video signal?
- A. 1 MHz
- B. 2 MHz
- C. 0.2 MHz
- D. 0.5 MHz
437. What is the diagonal screen size for the 19CP4 picture tube?
- A. 21
- B. 23
- C. 4
- D. 19
438. What is the phase angle between B – Y and R – Y?
- A. 180 deg
- B. 45 deg
- C. 90 deg
- D. 270 deg
439. How many gray scale steps are in the EIA test pattern in television?
- A. 10
- B. 40
- C. 50
- D. 15
440. In TV, degaussing is done with _____.
- A. Direct current
- B. Pulsed current
- C. Alternating current
- D. Any of these
441. R, G and B video drive controls set for ________.
- A. Black
- B. Dark gray
- C. White
- D. Light gray
442. What is the phase difference between the color sync burst and the B – Y video?
- A. 180 deg
- B. 45 deg
- C. 90 deg
- D. 270 deg
443. What is the hue of the color sync burst?
- A. Yellow-green
- B. Red
- C. Blue
- D. Orange
444. What synchronizes the horizontal of the TV picture tube?
- A. HSC
- B. HAFC
- C. HFC
- D. HAC
445. What is the typical anode voltage for a 25-inch color picture tube?
- A. 3 kV
- B. 20 kV
- C. 10 kV
- D. 30 kV
446. In television, what is the phosphor number for monochrome picture tube?
- A. P4
- B. P21
- C. P22
- D. P3
447. In television picture tube, what is the color of the P1 phosphor?
- A. Red
- B. Green
- C. Yellow
- D. Blue
448. What video frequency corresponds to 240 lines of horizontal resolution?
- A. 1 MHz
- B. 3 MHz
- C. 2 MHz
- D. 4 MHz
449. The minimum FM broadcast transmitter power in metro manila and metro cebu is
- A. 25 kW
- B. 10 kW
- C. 1 kW
- D. 30 kW
450. The maximum power suggested by KBP on 919-1312 AM broadcast station in Metro Manila.
- A. 10 kW
- B. 20 kW
- C. 15 kW
- D. 5 kW
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