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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 18
1.
Transit time is considered as significant at
HF
MF
LF
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In a colour TV receiver, AGC adjusts the gain of
RF stage only
IF stage only
RF stage and one or two IF stages
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
In pulse transmitter the ratio of time on to time off is called
efficiency
duty cycle
base
bandwidth
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
In figure the output v(t) is
phase modulated signal
amplitude modulated signal
frequency modulated signal
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
A MASER is a
low noise device
high noise device
medium noise device
may be either high or medium noise device
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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