Electronics and Communication Engineering - Communication Systems

11.
Armstrong modulator generates
AM signals
FM signals
PM signals
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
The diagonal clipping in Amplitude Demodulation using (envelope detector) can be avoided if Rc time constant of the envelope detector satisfies the following condition here ω is message bandwidth and ωc is carrier frequency both in rad sec,
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
To select one out of N equally probable events, the number of bits required is
log2 N
log10 N
loge N
N
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
What is the frequency of audio modulation?
1000 Hz
2000 Hz
3000 Hz
2000 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
The RF section of a radio transmit generally consists of
master oscillator
final power amplifier to feed antenna
buffer stage
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.