IndiaBIX

Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 24
41.
Which of the following is not considered as a useful quantity in comparing noise performance of receivers?
Noise temperature
Noise figure
Noise resistance
Input noise voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Oscillator crystal is made of
silicon
germanium
diamond
quartz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
If an isotropic source is radiating power P in all directions, the electric field at a distance d from the source is proportional to
(P/d)0.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
An FM signal has modulating frequency fm and maximum frequency deviation of δ. The bandwidth will be nearly equal to
δ
2 δ
2fm δ
fm δ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
In a cellular communication system, path loss between transmitter and receiver is due to
scattering from building, trees, vehicles and other structure
reason at (a) above and due to reflections from ground only
reason at (a) and (b) above along with reflections from ionosphere only
reasons at (a), (b) and (c) above along with loss due to surface wave phenomenon
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers