99. An amplitude modulated receiver uses a diode detector for demodulation. This enables it satisfactorily to receive
A. A3 J
B. A3 A
C. A3 B
D. A3 H

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100. Audio frequency range lies between
A. 20 Hz and 20 kHz
B. 20 kHz and 200 kHz
C. 2 MHz and 20 MHz
D. 20 MHz and 200 MHz

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101. Vestigial side band is most commonly used in
A. Radio transmission
B. Television transmission
C. Telephony
D. All of the above

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102. Maximum undistorted power output of a transmitter can be expected when its modulation is
A.50%
B. between 50% and 90%
C.100%
D. more than 100%

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103. Which of the following filter is generally used in SSB generation?
A. Active filter
B. Mechanical filter
C. LC filter
D. Crystal filter

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104. Which of the following is the advantage of base modulation over collector modulation of a transistor class C amplifier?
A. Better linearity
B. Better efficiency
C. Low modulating power requirement
D. High power output per transistor

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105. Which of the following is inveriably found in SSB?
A. Tuned modulator
B. Class B RF amplifier
C. Class C audio amplifier
D. All of the above

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