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
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
101. Vestigial side band is most commonly used in
A. Radio transmission
B. Television transmission
C. Telephony
D. All of the above
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%
103. Which of the following filter is generally used in SSB generation?
A. Active filter
B. Mechanical filter
C. LC filter
D. Crystal filter
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
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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