Q.1 For the amplitude modulated signal above, which of the following is the corresponding bit sequence?
A) 001010
B) 101011
C) 111010
D) 111010
Q.2 Low pass filter attenuates?
A) High frequencies
B) Low frequencies
C) Medium frequency
D) None of these
Q.3 What are the three general categories used to produce modulation in radio frequency (RF) transmission today?
A) BASK, FSK & PSK
B) Pulse Amplitude, pulse width & pulse position
C) Amplitude, Frequency & Phase
D) Analog, Digital & Shift Keying
Q.4 If a carrier frequency of 1 MHz and a modulating tone of 10 kHz go to the modulator, the output signal includes?
A) 1.01 MHz, 1MHz & 0.99 MHz
B) 1.1 MHz, 1 MHz & 0.9 MHz
C) 1.11 MHz, 1 MHz & 0.99 MHz
D) 1.111 MHz, 1 MHz & 0.999 MHz
