Electronics and Communication Engineering - Communication Systems
Exercise : Communication Systems - Section 1
- Communication Systems - Section 13
- Communication Systems - Section 25
- Communication Systems - Section 24
- Communication Systems - Section 23
- Communication Systems - Section 22
- Communication Systems - Section 21
- Communication Systems - Section 20
- Communication Systems - Section 19
- Communication Systems - Section 18
- Communication Systems - Section 17
- Communication Systems - Section 16
- Communication Systems - Section 15
- Communication Systems - Section 14
- Communication Systems - Section 1
- Communication Systems - Section 12
- Communication Systems - Section 11
- Communication Systems - Section 10
- Communication Systems - Section 9
- Communication Systems - Section 8
- Communication Systems - Section 7
- Communication Systems - Section 6
- Communication Systems - Section 5
- Communication Systems - Section 4
- Communication Systems - Section 3
- Communication Systems - Section 2
41.
A generator is feeding power to a transmission line of characteristic impedance Z0. The line is terminated in impedance ZL. Standing waves will be set up if
Answer: Option
Explanation:
Both the case, i.e., ZL > Z0 and ZL < Z0 give rise to standing waves.
42.
In sound recording the degree of pre-emphasis is about 6 dB/ octave.
Answer: Option
Explanation:
It erases the matter already existing on the tape.
43.
Space wave may be a direct wave or wave reflected from earth.
Answer: Option
Explanation:
Strength of space wave depends on distance as it suffers attenuation.
44.
Radio broadcasts are generally
Answer: Option
Explanation:
Frequency modulation gives noise free reception and is used for radio broadcasts.
45.
If the frequency of a wave 20 Hz, the time period is
Answer: Option
Explanation:
.
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