Electronics and Communication Engineering - Communication Systems

11.
In a 4-ary FSK, the frequencies are separated by fs. Then they are
in phase
in phase opposition
orthogonal
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
In cell communication, cell stands for
Geographical Area
Battery
Location
No meaning
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
In which of the following frequency bands are the standard AM radio broadcast stations?
MF
HF
VHF
UHF
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
The frequency tolerance for the RF carrier in the standard AM radio broadcast band is
zero
+20 Hz
+1000 Hz
+25 Hz
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
If carrier is modulated by a digital bit stream having one of the possible phases of 0°, 90°, 180°, and 270°, then modulation is called
BPSK
QPSK
QAM
MSK
Answer: Option
Explanation:
No answer description is available. Let's discuss.