99.  The arrangement that couples a television transmitter to space is called a/an
A. coupler
B. antenna
C. reflector
D. transmission line

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100. In T.V., the picture signal is
A. amplitude modulated and at the low-frequency end of each channel allocation
B. frequency modulated and at the low-frequency end of each channel allocation
C. amplitude modulated and at the high frequency end of each channel allocation
D.

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101. The number of frames per second in our TV system is
A.50
B.24
C.25
D.49

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102. Interlacing is used in TV frames to
A. produce illusion of motion
B. ensure scanning of all lines
C. avoid flicker
D. avoid Humming

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103. The separation of sound and picture carriers in our TV system is ? MHz.
A.5.5
B.4.5
C.6
D.5

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104. The maximum swing of the sound carrier in our TV system is ?kHz.
A. ? 10
B.15
C. ? 25
D.28

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105. The output stage of a TV transmitter is usually
A. plate modulited class-C amplifier
B. grid modulated class-C amplifier
C. grid modulated class-A amplifier
D. none of above

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