MCQs in Broadcasting and Cable TV System Part XI

This is the Multiples Choice Questions Part 11 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.

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:

Broadcasting and Cable TV System MCQs

PART 1: MCQs from Number 1 – 50                        Answer key: PART I

PART 2: MCQs from Number 51 – 100                   Answer key: PART II

PART 3: MCQs from Number 101 – 150                 Answer key: PART III

PART 4: MCQs from Number 151 – 200                 Answer key: PART IV

PART 5: MCQs from Number 201 – 250                 Answer key: PART V

PART 6: MCQs from Number 251 – 300                 Answer key: PART VI

PART 7: MCQs from Number 301 – 350                 Answer key: PART VII

PART 8: MCQs from Number 351 – 400                 Answer key: PART VIII

PART 9: MCQs from Number 401 – 450                 Answer key: PART IX

SEE: More Questions and Answers in Broadcasting and Cable TV Systems

PART 11: MCQs from Number 501 – 550                 Answer key: PART XI

Continue Practice Exam Test Questions Part XI of the Series

501. Which is used in closed-circuit TV?

• A. Vidicon
• B. Iconoscope
• C. Image orthicon
• D. Kinescope

502. What is the waveform of the sweep voltages?

• A. Trapezoidal
• B. Sawtooth
• C. Trigger
• D. Square

503. If the pulse peak is 100% modulation, what is the blanking level?

• A. 25%
• B. 50%
• C. 65%
• D. 75%

504. What device allows one camera to accept pictures from three or more projectors?

• A. Film multipliers
• B. Film demultiplexers
• C. Film multiplexers
• D. Film acceptor

505. What is the order of scanning four successive motion-picture frames for TV?

• A. 3,2,3,2
• B. 2,3,2,3
• C. 2,2,3,3
• D. 3,3,2,2

506. From the low-frequency end of a channel, what is the visual carrier frequency?

• A. 3.58 MHz
• B. 0.25 MHz
• C. 1.25 MHz
• D. 4.5 MHz

507. The circuits make up the front end of a TV receiver, except:

• A. RF
• B. Mixer
• C. IF
• D. Oscillator

508. What is the impedance at the antenna input terminals of a TV receiver?

• A. 300 ohms
• B. 150 ohms
• C. 50 ohms
• D. 100 ohms

509. Why are triodes and MOSFETs best for TV RF amplifiers?

• A. High power
• B. Efficiency
• C. Low noise
• D. High gain

510. In what circuit configuration are triodes and MOSFETs used?

• A. Cascade
• B. Darlington
• C. Cascade
• D. Shunt

511. The signal might a video amplifier amplify?

• A. Aural IF
• B. Video
• C. Blanking
• D. Any of these

512. When coupling from a sync separator, what is used to obtain the horizontal sync pulses?

• A. Integrator
• B. Corrector
• C. Differentiator
• D. Separator

513. When coupling from a sync separator, what is used to obtain the vertical sync pulses?

• A. Integrator
• B. Corrector
• C. Differentiator
• D. Separator

514. The type of active device used in horizontal output stages, except:?

• A. Vacuum tube
• B. FET
• C. BJT
• D. SCR

515. What should be produced by weak blue, weak green, and weak red signals on a color CRT?

• A. White
• B. Shade
• C. Gray
• D. Off white

516. How many such mirrors are required in a color TV camera?

• A. One
• B. Two
• C. Three
• D. Four

517. What is the combining circuit called in TV?

• A. Combiner
• B. Multiplexer
• C. Integrator
• D. Mixer

518. What is the letter symbol for the luminance signal?

• A. R
• B. Q
• C. I
• D. Y

519. What is the total R + G + B for a Y signal?

• A. 0
• B. 1
• C. 2
• D. 1.5

520. If a white scene is picked up what is the Y value?

• A. 1
• B. 2
• C. 0
• D. 2.5

521. If a black scene is being picked up, what is the Y value?

• A. One
• B. 0.5
• C. Zero
• D. 1.5

522. What circuit does a color killer kill?

• A. Bandstop filter
• B. High-pass filter
• C. Low-pass filter
• D. Bandpass filter

523. If the blue dot is always at the bottom of a triad, what position must the blue gun always have?

• A. Top
• B. Left side
• C. Right aside
• D. Center

524. How many cathodes in a shadow-mask picture tube?

• A. 1
• B. 2
• C. 3
• D. 4

525. How many guns in a shadow mask picture tube?

• A. 1
• B. 2
• C. 3
• D. 4

Complete List of MCQs in Communications Engineering per topic

Series of Multiple Choice Questions in Electronics Systems and Technologies

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