Electronics and Communication Engineering - Communication Systems

41.
The tuned circuit of the oscillator in a simple AM transmitter employs a 50 H coil and a 1 nanofarad capacitor. If the oscillator output is the carrier frequency will be
448 kHz
555 kHz
625 kHz
712 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
In a low level AM system, the amplifier which follows the modulated stage must be the
linear device
harmonic device
class C amplifier
non-linear device
Answer: Option
Explanation:
No answer description is available. Let's discuss.

43.
In a square law modulator, the carrier frequency should be __________ times than the highest modulating frequency.
1
2
4
3
Answer: Option
Explanation:
No answer description is available. Let's discuss.

44.
CSSB stands for
Compatible Single Sideband
Compressed Single Sideband
Carrier Single Sideband
Coded Single Sideband
Answer: Option
Explanation:
No answer description is available. Let's discuss.

45.
Tropospheric scatter is used with frequencies in the range of
VLF
HF
UHF
VHF
Answer: Option
Explanation:
No answer description is available. Let's discuss.